The set H is a subspace of M2x2 because H contains the zero vector of M2x2. H is closed under vector addition, and H is closed under multiplication adsorb by scalars.
Correct option si, A.
To show that H is a subspace of M2x2, we need to show that it satisfies the three properties of a subspace: (1) contains the zero vector, (2) closed under vector addition, and (3) closed under multiplication by scalars.
(1) H contains the zero vector of M2x2, which is the 2x2 matrix with all entries equal to zero.
(2) To show that H is closed under vector addition, we need to show that if A and B are matrices in H, then A+B is also in H. Let A = [a b; 0 d] and B = [a' b'; 0 d'] be matrices in H. Then A+B = [a+a' b+b'; 0 d+d'] is also in H, since it has the same form as matrices in H.
(3) To show that H is closed under multiplication by scalars, we need to show that if A is a matrix in H and k is a scalar, then kA is also in H. Let A = [a b; 0 d] be a matrix in H, and let k be a scalar. Then kA = [ka kb; 0 kd] is also in H, since it has the same form as matrices in H.
In order for H to be a subspace of M2x2, it must satisfy the following conditions:
1. Contain the zero vector of M2x2
2. Be closed under vector addition
3. Be closed under multiplication by scalars
Since H contains all 2x2 matrices and the zero vector is a 2x2 matrix, it meets the first condition. Furthermore, adding two matrices in H results in another matrix in H, satisfying the second condition. Lastly, multiplying a matrix in H by a scalar also results in a matrix in H, fulfilling the third condition. Hence, H is a subspace of M2x2.
To know more about adsorb visit:
https://brainly.com/question/24141921
#SPJ11
please help - 100 points
Read "Eulogy of the Dog," a speech given by attorney George Vest at a trial in 1870. Then, respond to the question that follows.
Gentlemen of the Jury: The best friend a man has in the world may turn against him and become his enemy. His son or daughter that he has reared with loving care may prove ungrateful. Those who are nearest and dearest to us, those whom we trust with our happiness and our good name may become traitors to their faith. The money that a man has, he may lose. It flies away from him, perhaps when he needs it most. A man's reputation may be sacrificed in a moment of ill-considered action. The people who are prone to fall on their knees to do us honor when success is with us, may be the first to throw the stone of malice when failure settles its cloud upon our heads. The one absolutely unselfish friend that man can have in this selfish world, the one that never deserts him, the one that never proves ungrateful or treacherous is his dog. A man's dog stands by him in prosperity and in poverty, in health and in sickness. He will sleep on the cold ground, where the wintry winds blow and the snow drives fiercely, if only he may be near his master's side. He will kiss the hand that has no food to offer. He will lick the wounds and sores that come in encounters with the roughness of the world. He guards the sleep of his pauper master as if he were a prince. When all other friends desert, he remains. When riches take wings, and reputation falls to pieces, he is as constant in his love as the sun in its journey through the heavens.
If fortune drives the master forth, an outcast in the world, friendless and homeless, the faithful dog asks no higher privilege than that of accompanying him, to guard him against danger, to fight against his enemies. And when the last scene of all comes, and death takes his master in its embrace and his body is laid away in the cold ground, no matter if all other friends pursue their way, there by the graveside will the noble dog be found, his head between his paws, his eyes sad, but open in alert watchfulness, faithful and true even in death.
In a well-written paragraph of 5–7 sentences, explain the meaning and significance of the speaker's use of one rhetorical appeal and one rhetorical device from the list below. Use textual evidence from the speech to support your response.
Rhetorical appeals
ethos
logos
pathos
Rhetorical devices
figurative language
irony
rhetorical question
By the use of rhetorical device, The speaker in "Eulogy of the Dog" uses both pathos and figurative language to make a powerful argument for the importance and loyalty of a dog's companionship.
The speaker evokes a strong emotional response from the audience by describing the unwavering loyalty and devotion of a dog to its master, even in the face of adversity and hardship.
The speaker describes the dog as "the one absolutely unselfish friend that man can have in this selfish world, the one that never deserts him, the one that never proves ungrateful or treacherous." This evokes a sense of sadness and empathy in the audience, as they are reminded of the potential betrayal and unfaithfulness of human relationships.
What is the speaker's use of rhetorical appeal?The speaker was said to have used figurative language to bring the argument to life and make it more relatable to the audience. The speaker describes the dog as "guards the sleep of his pauper master as if he were a prince" and "faithful and true even in death"
In all, the use of pathos and figurative language in the speech helps to create a powerful and emotional argument for the importance and loyalty of a dog's companionship.
The speaker is able to evoke feelings of empathy and sadness in the audience, while also making the abstract concept of loyalty more relatable and tangible.
Learn more about rhetorical device from
https://brainly.com/question/1506566
#SPJ1
Answer: the other guy is correct I got a 90% on that question
Explanation:
Balance this equation for C4H12+O2------> CO2 + H2O
C4H12 + 7 O2 → 4 CO2 + 6 H2O is the balanced chemical equation for the equation C4H12+O2 → CO2 + H2O.
How do chemical equations work?Chemical reactions are representations of chemical processes using symbols, with the reactants & products identified by their unique chemical formulae. The five basic types of chemical reactions are combining, decomposing, single-replacement, double-replacement, and combustion.
What does the arrow (→) in the reaction mean?An arrow representing a reaction merely shows that something has altered and transformed. The arrow points in the direction of the subsequent object from the preceding one (the one that added). The reaction arrow is used in the "equation of reaction". The thing that started the reaction is known as the reactant.
To know more about chemical equation visit :
https://brainly.com/question/28294176
#SPJ1
Explain how lithium-ion batteries use a lattice structure with electrolytes to function.
Lithium is a particularly reactive metal with a substantially higher storage density than lead batteries. Carbon and lightweight lithium are used to create the electrodes in lithium batteries.
These ions reach the anode during battery recharge. lithium batteries are significantly lighter. Thus, three Li+ ions are equivalent to one Al+3 ion. As a result, the energy storage capacity is increased by three units of charge provided by ions. Rechargeable batteries made of aluminum are inexpensive and have low flammability. Because aluminum is inert, it is safe to use and simple to use in a natural setting. Since aluminum has a higher volumetric capacity than lithium, it can store more energy per unit of volume. An electrochemical cell is one in which a chemical reaction aids in the generation of an electric current. Electricity is used in an electrolytic cell to carry out the chemical reaction that is not spontaneous. While no initiation is required for a spontaneous reaction.
To know more about batteries on
https://brainly.com/question/13651147
what is the soeed of a rock dropped off a cliff after 10 seconds of free fall?
The speed of the rock after 10 seconds of free fall would be approximately 122 meters per second (274 mph).
What is rock?
Rock is a solid material composed of a combination of minerals, such as quartz, feldspar, mica, and other minerals. Rocks are formed by the process of weathering, erosion, and deposition of material from the Earth's crust, which is composed of rock materials. Rocks are classified based on their composition and origin. The three main types of rocks are sedimentary, igneous, and metamorphic. Sedimentary rocks form from sediments that are transported and deposited by water, wind, or ice. Igneous rocks form when molten rock material cools and crystallizes. Metamorphic rocks form when existing rocks are changed by intense heat and pressure. Rocks are an important part of the Earth's surface and are used in many applications, such as construction, landscaping and the production of certain materials. Rocks can also provide information about the geologic history of an area.
To learn more about rock
https://brainly.com/question/89259
#SPJ1
What is the limiting reactant in the balloon with 7.5g baking soda and vinegar?
In the last flask, which contained 7.5g of baking soda initially, add vinegar. The fact that a reaction takes place proves that vinegar was the limiting reactant.
What limiting reagent is used in the balloon experiment?
Each flask should contain about 15 drops of bromothymol blue after the balloons have been removed. The first flask, which contained 2.0 baking soda initially, should now contain baking soda. The fact that a reaction takes place proves that baking soda was the limiting reactant. Calculating how much product each reactant can produce and identifying the limiting reagent by which one produces the least amount of product is one method of doing so.
Since oxygen is the limiting reactant, lowering the oxygen input is the best way to reduce soot.
To learn more about oxygen refer to:
brainly.com/question/26073928
#SPJ1
when 1 mole of nitrogen gas (n2) reacts with 3 moles of hydrogen gas (h2), how many moles of ammonia (nh3) are produced?
One mole of nitrogen (N₂) gas reacts with 3 moles of hydrogen (H₂) gas to produce 2 moles of ammonia (NH₃).
When nitrogen gas (N₂) reacts with hydrogen gas (H₂) in the presence of a catalyst, the reaction produces ammonia (NH₃). The balanced equation for this reaction is: N₂ + 3H₂ --> 2NH₃.
This means that for every mole of nitrogen gas that reacts, 3 moles of hydrogen gas are needed and 2 moles of ammonia are produced. This reaction is the basis for the Haber-Bosch process, which is used industrially to produce ammonia on a large scale. The reaction is exothermic and occurs at high temperature and high pressure, with a catalyst such as iron or ruthenium used to increase the rate of reaction.
To learn more about ammonia visit: https://brainly.com/question/14854495
#SPJ4
Classify the following solvents as either protic or aprotic solvents.
Protic Aprotic
CH3OH
CH3CH2OH
acetic acid
DMF
DMSO
acetonitrile
acetone
H2O
for the given solvents Protic are CH3OH, CH3CH2OH, acetic acid, H2O
Aprotic are DMF, DMSO, acetonitrile, acetone.
Protic solvents are solvents that have a hydrogen atom bonded to an oxygen or nitrogen atom (such as water or ethanol), and are capable of forming hydrogen bonds with other molecules. These solvents can act as a hydrogen bond donor. Aprotic solvents, on the other hand, do not have a hydrogen atom bonded to an oxygen or nitrogen atom, and therefore do not have the ability to form hydrogen bonds.These solvents are not hydrogen bond donors. Examples of aprotic solvents include dimethyl sulfoxide (DMSO) and acetonitrile. Protic solvents are generally better solvents for protic compounds, while aprotic solvents are generally better solvents for aprotic compounds. They also have different effects on chemical reactions, as protic solvents.
Learn more about aprotic solvents here:
https://brainly.com/question/29346943
#SPJ4
Determine if a precipitation reaction occurs between aqueous silver nitrate and aqueous calcium chloride. If a precipitation reaction takes place, write a balanced chemical equation, total ionic equation and net ionic equation for the reaction. Identify any spectator ions.
a. Balanced chemical equation:
b. Total ionic equation:
c. Net ionic equation:
d. Spectator ions:
You are not required to adjust the subscript in this case because Silver does have a charge value + and Chlorine does have a charge of -. However, because nitrate has a charge of - and calcium has a charge of 2+.
What are some uses for nitrate?
Natural compounds called nitrates (or nitrites) can be found in soil, air, and water. In order to prevent the development of bacteria and also to improve the color and flavor of food, nitrates are also employed as a food additive.
Why is nitrate poisonous?
The main health consequence of nitrate and nitrite exposure is methemoglobinemia. The clinical appearance may be one of oxygen starvation with cyanosis, cardiac arrhythmias and circulation failure, and developing central nervous system (CNS) consequences, depending on the amount of total MetHb [Skold et al.
To know more about nitrate visit:
https://brainly.com/question/5346392
#SPJ1
what is the formula for magnetite?
Answer:Fe₃O₄
Explanation:It contains 3 molecules of Iron and 4 molecules of Oxygen and that makes Magnetite.
draw 4-ethylphenol (p-ethylphenol),including all hydrogen atoms
p-Ethylphenol (4-EP) is an organic compound with the formula C₂H₅C₆H₄OH.
It is one of three isomeric ethyl phenols. It is a white solid that occurs as an impurity in xylenol and is used as such in the manufacture of commercial phenolic resins. It is also a precursor of 4-vinylphenol. On average, 4-ethylphenol is most abundant in red wine. 4-Ethylphenol has also been detected but not quantified in several different foods such as B. Arabica coffee (Coffea arabica), beer, corn (Zea mays), milk (cattle), red raspberry (Rubus idaeus). Ethyl (ethyl group; Et):
Part of the molecular structure corresponding to ethane minus one hydrogen atom:
Sometimes abbreviated as - CH₂CH₃.
Learn more about the ethylphenol in
https://brainly.com/question/3804927
#SPJ4
Draw Lewis structures for the N-methylidenehydroxylamine molecule (CH2NOH), the methylamine molecule (CH3NH2), and the acetonitrile molecule (CH3CN) in the window below, and then answer the questions that follow, based on your drawings.
Draw one structure per sketcher box. Separate added sketchers with + signs from the dropdown menu.
b.) What is the bond order of the carbon- nitrogen bond in the N-methylidenehydroxylamine molecule? (enter a number)
c.)Which species has the longest carbon-nitrogen bond, CH2NOH, CH3NH2, or CH3CN?
methylamine
acetonitrile
N-methylidenehydroxylamine
d.) Which species has the weakest carbon - nitrogen bond, CH2NOH , CH3NH2, or CH3CN ?
methylamine
acetonitrile
N-methylidenehydroxylamine
Show Approach
The lewis structures for the molecule (CH₂NOH), molecule (CH₃NH₂), and molecule (CH₃CN) is attached below.
b. The bond order is 3.
c. CH₃NH₂
d. CH₃NH₂
The lewis structure are :
CH₂NOH
H
: . . . .
H : C = N - O - H
°°
CH₃NH₂
H
| ..
H - C - N - H
| |
H H
CH₃CN
H
|
H - C - C ≡ N :
|
H
B. The bond order of the carbon- nitrogen bond in the N-methylidene hydroxylamine molecule is 2.
C. Species has the longest carbon-nitrogen bond is CH₃NH₂, methylamine.
D. Species has the weakest carbon - nitrogen bond is CH₃NH₂, methylamine.
To learn more about lewis structure here
https://brainly.com/question/4144781
#SPJ4
decentralizing power in the hands of a local subsidiary ____.
Power being decentralized to a local subsidiary could make it challenging to transfer knowledge from one company to another. Global corporations, in contrast to multidomestic firms: Atomic mass
What are atomic number and atomic mass?The quantity of protons and neutrons in a specific element's nucleus, known as its atomic mass, determines the element's chemical composition. The number of protons in the nucleus of an element is typically expressed as its atomic number. It is a measure of an element's average weight. The number of protons in the atom's nucleus as a whole.
What does it mean to be the atomic number?The quantity of protons in an atom is known as its atomic number. It is known as the proton number for this reason. It is represented in calculations by the capital letter Z. The word "Z" is derived from the German word "zahl," which meaning "number of numerals" or "atom zahl," a more contemporary term that denotes an atomic number.
To know more about atomic number visit:
https://brainly.com/question/8834373
#SPJ4
a student tried this same procedure (with slight modification) on a gel antacid. The student dissolved 3.00mL in 25.00mL of standardized HCI solution containing 1.727x10^-2 mol of HCI. The back-titration of the excess HCI required 4.62mL of 1.015M NaOH solution.
A) Calculate the molar concentration of the HCI solution that the student used.
B) Calculate the number of miles of HCI neutralized by the antacid tablet.
C) Calculate the volume effectiveness of the gel.
A) The formula for the molarity of HCl is 1.727*10-2 mol/0.025 L= 0.6908 (M). (B) The amount of HCl that one antacid pill neutralises is (0.01727 -0.0046893) mol = 0.0125807 mol.(C) The gel's volume efficacy is 0.004194/0.01*1000, or 419.4 mL.
An aqueous solution of hydrogen chloride is what is known as hydrochloric acid (HCL), commonly referred to as muriatic acid. It has an unmistakably strong odour and is colourless. It is categorised as a powerful acid. In the digestive tracts of the majority of animal species, including humans, it is a part of the stomach acid. The creation of inorganic and organic chemicals, the removal of metal stains, the extraction of oil, the purification of table salt, and pH control all include the usage of HCl. Acid hydrochloride is an inorganic substance. With the chemical formula HCl, it is a very corrosive acid. Muriatic acid and hydrogen chloride are other names for it.
learn more about HCL here:
https://brainly.com/question/15723116
#SPJ4
What evidence suggests that after glycolysis pyruvate is oxidized to acetyl coa?
Pyruvate is oxidized to Acetyl-CoA in the cytoplasm. The molecules produced are 2 carbon dioxide molecules, 2 NADH molecules, and 2 Acetyl CoA's. ;The process converts pyruvate to Acetyl CoA because otherwise, it cannot be introduced to the Citric Acid Cycle.
Define acetyl CoA?A number of metabolic processes in the metabolism of proteins, carbohydrates, and lipids involve the molecule acetyl-CoA. Its primary job is to transport the acetyl group to the citric acid cycle where it will be oxidized to produce energy.The oxidative decarboxylation of pyruvate from glycolysis, which takes place in the mitochondrial matrix, the oxidation of long-chain fatty acids, or the oxidative breakdown of certain amino acids are the three main sources of acetyl-CoA. The TCA cycle is the next step, where acetyl-CoA is oxidized to provide energy.A byproduct of the breakdown of glucose, fatty acids, and amino acids is acetyl-CoA. During glycolysis, glucose is split into two pyruvate molecules, each of which has three carbons.To learn more about acetyl CoA refer to:
https://brainly.com/question/14510638
#SPJ4
Laser pointed at a black paper is what type of energy dispersion, transmitted or opaque?
Dispersion types include chromatic, material, waveguide, and polarisation mode dispersion.
What is dispersion in the transmitted optical signal?The spreading out of a light pulse in time as it travels down the fibre is known as dispersion. Waveguide, material, and model dispersion are all types of dispersion in optical fibre. Below, each category is covered in more detail.White light dispersion occurs when white light passes through a glass prism and separates into its seven individual hues. The colours that are discernible include violet, indigo, blue, green, yellow, orange, and red.There are three types of dispersion in an optical medium, such fibre: chromatic, modal, and material. The emitter's spectral breadth causes chromatic dispersion. The number of various wavelengths that the LED or laser emits depends on its spectral width.To learn more about Dispersion refer to:
https://brainly.com/question/30215065
#SPJ1
Draw 4 water molecules interacting with
Li
+
ion. (6 pts)
Li
+
What interactions occur between two hexane molecules?
Interactions between two hexane molecules occur through London dispersion forces, which are weak intermolecular forces that arise due to the temporary dipoles produced by the motion of electrons in the molecules.
These forces become stronger as the molecules become larger, and so hexane molecules, which have long hydrocarbon chains, experience fairly strong London dispersion forces. These forces allow the hexane molecules to interact with one another in a way that they can form weak associations, which are important for the formation of liquid hexane.
Additionally, when two hexane molecules approach one another, they may also experience dipole-dipole interactions, which are slightly stronger than London dispersion forces. These interactions occur when the molecules have a slightly different distribution of electrons and attract one another.
Lastly, hexane molecules can also experience hydrogen bonding, which is the strongest intermolecular force and occurs when a hydrogen atom covalently bonded to an electronegative atom is attracted to an electronegative atom in a different molecule.
Learn more about interactions:
https://brainly.com/question/25902447
#SPJ4
Which one of the following compounds will have the lowest boiling point?
CH4 is the compound with the lowest boiling point.
What compound's lowest point is this?Helium has the lowest melting temperature of all chemical elements, and carbon has the greatest melting point.
Which molecule does have the lowest boiling point, but how do you know?With a reduction in molecule size, the strength of the London dispersion forces also reduces Therefore, in this situation, the molecule with the fewest branches and shortest length has the smallest boiling point.
To know more about boiling point visit:
brainly.com/question/2153588
#SPJ1
The complete question is -
Which one of the following compounds will have the lowest boiling point? (a) NH3 (b) C2H6 (c) CH3 (d) H2O
Which is the proton number?
The chemical entity's atomic number, commonly referred to as the nuclear charge number, is the charging number of an atoms (sign Z). This is the same as the proton amount (pn), which is the number of protons found in typical nuclei.
What is the function of a nucleus?
The nucleus houses the genes, which are parts that contain the genetic material, and regulates and directs the actions of the organism Inside the nucleus, tiny formations known as nucleoli are frequently found. The gel-like matrix where the nuclear components are suspended is known as the nucleoplasm.
How does the nucleus get built?
Atomic nuclei are made up of electrically charged proton and neutral neutrons. These items are held by the strong force, which is the greatest fundamental force that science has discovered.
To know more about nucleus visit:
https://brainly.com/question/17529078
#SPJ1
Click the "draw structure" box to launch the drawing utility. Draw the ketal derived from ethylene glycol and cyclohexanone.
The ketal derived from ethylene glycol and cyclohexanone can be drawn as follows. The two reactant molecules are shown in the center of the diagram.
The ethylene glycol molecule has two oxygen atoms, each of which is bound to two hydrogen atoms. The cyclohexanone molecule has a ring of six carbon atoms, each of which is bound to one hydrogen atom and one oxygen atom.
The two molecules are connected through a single bond between the oxygen atom of ethylene glycol and the carbon atom of cyclohexanone. The resulting product is a molecule with two oxygen atoms, each of which is bound to two hydrogen atoms, and a ring of six carbon atoms, each of which is bound to two hydrogen atoms and two oxygen atoms. This molecule is the ketal derived from ethylene glycol and cyclohexanone.
Learn more about cyclohexanone:
https://brainly.com/question/28163979
#SPJ4
List and explain four properties of plastics. Give one use of plastics linked to each other of these properties
Answer:
1.) plastics are poor conductors of heat and electricity
2.) plastics are non reactive metals they are not attacked by chemicals
3.) plastics are lightweight strong and durable
4.) plastics can be moulded and dyed easily in many colours like orange, pink ,sky blue , red, green, and e.t.c
the four uses of plastics are:
1.) bakelite is used to make electric switches insulating casings and handle of cookware and tools
2.) melamine is heat resistant and is used to make kitchenware , floor tiles and special suits for firefighters
3.) Teflon is used as a non stick coating on cookware as both water and oil do not stick to it
4.) many plastics are waterproof and therefore
they are used to make Water bottles and waterproof containers
Explanation:
Search it up bro :')
The four properties of plastics are malleability, longevity, cheapness, and poor conductivity.
Plastics are generally very malleable and can be molded into different shapes very easily. Different types of plastics have different melting points, which enables them to be shaped into different shapes and make objects.
Plastics are generally very durable and have a long shelf life. That is the reason why plastics are used to make things that go through a lot of wear and tear. A negative aspect of this is that plastics, when exposed to natural processes of degradation, do not break down easily and harm the environment.
Plastics are usually cheap and can be obtained at a very less price. This helps people afford goods made out of plastic and also reduces the production cost of the goods.
Plastics are generally very poor conductors of heat and electricity. This means that they do not conduct heat and electricity very well, which is why they are used as insulators and wire coverings.
Learn more about plastics at:
https://brainly.com/question/28420086?referrer=searchResults
Cual es la frecuencia de un laser rojo que tiene una longitud de onda de 676 nm?
What is the frequency of a red laser that has a wavelength of 676 nm?
A red laser with a wavelength of 676 nm would have a frequency of 4.43 x hertz.
The definition of frequency?The frequency in physics is the quantity of waves passing a fixed location in a unit of time. It also indicates how many cycles or vibrations a body in periodic motion experiences in a given unit of time.
How much hertz is frequency?Frequency is defined as the rate of changes in current direction per second. It is given in hertz (Hz), an internationally recognized unit of measurement. One hertz is equal to one cycle per second. A cycle is the technical term for a whole alternating current or voltage pulse.
To know more about frequency visit:
https://brainly.com/question/14316711
#SPJ1
The following list contains some common polyatomic ions. Using the charge on these ions and the idea of valence, predict the formulas for the compound formed from the following: nitrate no3-1 phosphate po4-3 sulfate so4-2 acetate c2h3o2-1 ammonium nh4+1 chromate cro4-2 carbonate co3-2 dichromate cr2o7-2 permanganate mno4-1 sulfite so3-2 calcium and phosphate ca 3so 12 ca 3(po 4) 2 capo 4 ca 2(po 4) 3.
A polyatomic ion, often called a molecular ion, is a set of covalently bound atoms or a metal complex that can be thought of as acting as a single unit and has a net charge that is not zero.
Chlorate. ClO₃⁻,Hydroxide. OH⁻,Carbonate. CO₃⁻²,Sulfate. SO₄⁻²,Phosphate. PO₄⁻³,Ammonium. NH₄⁺
What are Polyatomic ions?Similar to how ions are created when neutral atoms acquire or lose electrons, polyatomic ions are created when neutral molecules gain or lose electrons. Because the total number of electrons in the molecule is more than the total number of protons in the molecule, a polyatomic ion is a collection of covalently bound atoms with a net charge. A polyatomic ion's net charge must be equal to the formal charges added to each of its atoms in the Lewis dot structure.
Structure of Polyatomic IonsA molecule that has been ionised by gaining or losing electrons is referred to as a polyatomic ion. The group of atoms that are covalently linked together to form a polyatomic ion has a net charge because the total amount of electrons and protons in the molecule is not equal. When depicting Lewis dot structures, the total charge on a polyatomic ion is equal to the sum of the formal charges on each of the atoms in the ion.
List of Common Polyatomic Ions
[AsO3]3-Arsenate
[BO3]3-Borate
[PO3]3-Phosphite
[PO4]3-Phosphate
[SiO3]2-Silicate
[SO4]2-Sulfate
[SO3]2-Sulfite
[S2O3]2-Thiosulfate
[H2PO4]–Dihydrogen phosphate-
[OH]–Hydroxide
[HSO4]–Hydrogen sulphate
[NO3]–Nitrate
[NO2]–Nitrite
[ClO4]–Perchlorate
[MnO4]–Permanganate
To know more about Polyatomic ion,refer to:
https://brainly.com/question/13659069
#SPJ4
Decribe the different term: lattice enthalpy and hydration enthalpy. Which proce in quetion 2 i exothermic? Which proce i endothermic? Explain your reaoning
Lattice enthalpy and hydration enthalpy both are always exothermic.
Lattice enthalpy is exothermic it involves the association of positively charged and negatively charged species. These species have an electrostatic forces of attraction to each other and can therefore released a lot of energy when bond is formed. [tex]Na^{+}[/tex] + [tex]Cl^{-}[/tex] → [tex]Na^{+}[/tex][tex]Cl^{-}[/tex]
Hydration enthalpy also exothermic in nature as water molecules surround the ions to form new forces of attraction. It depends upon ionic charge- greater the ionic charge stronger will be the ion-dipole interactions which is formed between the ions in the ionic lattice as well as water molecules.
[tex]M^{+}[/tex](g) + aq → [tex]M^{+}[/tex][tex]_{(aq)}[/tex]
To know more about exothermic here
https://brainly.com/question/4345448
#SPJ4
What is the number of ammonia molecules made when 6 grams ofhydrogen gas reacts with excess nitrogen? 3 H2+ N2→2 NHO 24 x 10 23O 6 x 10 23 O 12 x 10 23 O 18 x 10 23
The number of ammonia molecules made when 6 grams of hydrogen gas reacts with excess nitrogen is 4 mol.
Given equation,
3H2(g) + N2(g) → 2NH3(g)
If N2 is present in excess, increase the provided moles H2 even by mole ratio of H2 to NH3 within balanced equation such that moles H2 cancel, producing moles NH3.
⇒ 6 mol H2 × (2 mol NH3/3 mol H2)
⇒ = 4 mol NH3.
A chemical equation is a representation of the a chemical reaction in the shape of a chemical formula with an arrow going from reactant to product, and a balanced chemical equation has the same amount of atoms on both sides of the equation. The rule of the conservation of mass guides the balancing of such a chemical equation in this case.
A chemical reaction is the process in which one or even more compounds, defined as reactants, are converted into one or more unique entities, known as products. Chemical elements as well as compounds are examples of substances. A chemical reaction rearranges the component atoms of the reactants to produce various products. In this situation, hydrogen and nitrogen combine to generate ammonia. The reaction described above is an example of the a combination reaction.
To know more about the Chemical equation, here
https://brainly.com/question/30087623
#SPJ4
How many grams of sodium nitrate will be produced from 15.1 moles of silver nitrate?
1284.689 grams of sodium nitrate will be produced from 15.1 moles of silver nitrate.
How to determine grams of sodium nitrate?To determine how many grams of sodium nitrate will be produced from 15.1 moles of silver nitrate, we need to perform a balanced equation and stoichiometry calculation.
The balanced equation for the reaction between silver nitrate and sodium chloride to form silver chloride and sodium nitrate is:
AgNO3 (aq) + NaCl (s) → AgCl (s) + NaNO3 (aq)
We know that 15.1 moles of silver nitrate will react with the stoichiometric amount of sodium chloride, which is 1 mole of sodium chloride for every 1 mole of silver nitrate.
So, we can calculate the moles of sodium nitrate that will be produced by multiplying the moles of silver nitrate by the coefficient of sodium nitrate in the balanced equation:
15.1 moles AgNO3 * 1 mole NaNO3 / 1 mole AgNO3 = 15.1 moles NaNO3
To convert the moles of sodium nitrate to grams, we can use the molar mass of sodium nitrate, which is 84.99 g/mol.
15.1 moles NaNO3 * 84.99 g/mol = 1284.689 g
So, 1284.689 grams of sodium nitrate will be produced from 15.1 moles of silver nitrate.
Learn more about sodium nitrate in brainly.com/question/24256699
#SPJ1
Appearance Of Filter Paper
A semi-permeable paper barrier called filter paper is positioned perpendicular to an air or liquid flow. It is employed to separate tiny solid particles from gases or liquids.
What is the name of the paper filter?Paper and cellulose filters are made from cellulose fibers and are intended for general filtration. That particle retention level might be as low as 2.5 m. This kind of membrane filter must be folded in order to be used in simple gravity filtering using a plastique or glass filtration funnel.
What's the clearest filter paper?For critical gravimetric analysis, this grade serves as a global benchmark. Of all the Whatman cellulose filter papers, it is renowned for having the best particle retention.
To know more about Filter Paper visit:
https://brainly.com/question/6870130
#SPJ4
Draw the dipeptide Val-Tyr at pH 7.0 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Temp needed. The single bond is active by default.
At pH 7.0, Valine and Tyrosine will both exist in their uncharged forms. The Valine will be drawn as a CH₃CH(NH₂)₂ group and the Tyrosine will be drawn as a C₆H₄CH(OH)CH₂NH₂ group.
Both amino acids will be linked together by a peptide bond, which is a covalent bond that will be formed between the carboxyl group of one amino acid and the amino group of another amino acid. This will create the dipeptide Val-Tyr, which will be drawn as a
CH₃CH(NH₂)CO-C₆H₄CH(OH)CH₂NH₂.
The carboxyl group of Valine will be linked to the amino group of Tyrosine, forming a single molecule.
Learn more about peptide:
https://brainly.com/question/28709758
#SPJ4
How many hydrogen bonds are between adenine and thymine?
A sample of O₂ gas occupies 21.4L at 0.900atm. The temperature is 257K.
What is the mass of the O₂ gas?
The mass of O2 gas is about 6.9 g.
What do you mean by gas law?It is a law which link a gas's pressure, volume, and temperature.
The ideal gas law states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvins.
We can use this equation to find the number of moles of gas, and then use the molar mass of O2 to find the mass of the gas.
First, we can rearrange the ideal gas law to solve for n:
n = (PV) / (RT)
We know that P = 0.900atm, V = 21.4L, R = 0.08206 Latm/molK, and T = 257K.
Substituting these values into the equation:
n = (0.900atm * 21.4L) / (0.08206 Latm/molK * 257K)
Now we know the number of moles of O2 gas. To find the mass, we can use the molar mass of O2, which is 32.00 g/mol.
mass = n * molar mass
mass = n * 32.00 g/mol
So, the mass of O2 gas is about 6.9 g.
To know more about the mass, visit:
brainly.com/question/19694949
#SPJ1
If the formula in cell d49 is copied to cells e49 what sequence of values would be generated.
If the formula in cell d49 is copied to cells e49. The sequence of values would be generated are C, C, C.
We can observe from the attached excel file that the formula in cell d49 indicates;
= $D$44
This means that the value in cell d49 will be the same as the value in cell e49 because Excel copies the result when it moves or copies a cell that contains a formula.
Since C is the value in d44, it follows that C will also be the value in e49.
The values in cells E49 and F49 will likewise be C using the same reasoning Excel employs when copying formulas.
Your question is incomplete but most probably the proper image of the excel sheet attached below
Read more on excel copying formulas at; https://brainly.com/question/26053797
#SPJ4