The expected hybridization for the indicated atom in each of the following molecules are:
• H2c=o for c atom- sp2
• BH3 for B atom- sp2
• CH3SH for S atom- sp3
• H2C=NH for N atom- sp2
We are aware that the mixing of valence orbitals that results in the production of sigma bonds is the definition of the hybridization state. Any given organic compound's central atom's hybridization state can be determined in part by the types of orbitals that are included in mixing and the quantity of sigma bonds that are generated. The carbon atom in this instance of H2C=O possesses three bond pairs, indicating that three electron domains are present. So SP2 would be the hybridization involved. Three electron domains for BH3 boron result in sp2 hybridization. Sulfur for CH3SH has two lone pairs and four bond pairs, indicating that there are four electron domains and SP3 hybridization. Finally, the N atom in H2C=NH exhibits SP2 hybridization due to its three electron domains.
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Which of the following carbohydrates would NOT be a molecule used for energy storage? O starch O cellulose O glycogen
O All of the above are used for energy storage
All of the above are used for energy storage of the following carbohydrates would NOT be a molecule used for energy storage
Which one of the following is not a molecule that stores energy?Proteins do not function as molecules that store energy. Storage lipids, fat and oil are hydrocarbon compounds that, when oxidized, release a tremendous amount of energy.
Is the molecule utilized to store energy starch?In plants, starch is used to store energy. Glycogen is a glucose monomer-based polysaccharide that is even more heavily branched and used by animals as a form of energy storage. The cells of the liver and muscles are where glycogen is predominantly produced and stored.
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Glycine is the only naturally occurring amino acid that is negatively charged. positively charged. achiral.
neutral.
in the L-form.
Glycine is the only naturally occurring amino acid that is: achiral.
What does glycine do in proteins?Body requires the amino acid glycine to make proteins, which are necessary for tissue development and maintenance as well as the production of critical compounds like hormones and enzymes.
Two atoms of carbon, five atoms of hydrogen, one atom of nitrogen, and two atoms of oxygen make up the organic molecule glycine. It is one of the 20 amino acids that are frequently found in the proteins of mammals. NH₂-CH₂-COOH is the formula for the chemical compound glycine.
The smallest and most basic amino acid is glycine. The fact that 2-H is connected to the same carbon atom makes it the only amino acid without a chiral carbon. As a result, it is the sole achiral amino acid.
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draw the structural formula of an alkane that has seven carbon atoms with two isopropyl groups.
The first structure, is the alkane with 7 carbons and two isopropyls groups aside (structure name, 3,4 - diisopropylheptane) and the second below that, would be the one with seven carbons including the isopropyl group counting.
An alkane is a hydrocarbon with the general formula CnH2n+2, where n is the number of carbon atoms. They are also known as saturated hydrocarbons because they contain only single bonds between carbon atoms, and are typically composed of a chain of carbon atoms with hydrogen atoms bonded to them. Alkanes are relatively unreactive, and are found in many natural gases and crude oils.An isopropyl group is a functional group with the molecular formula C3H7. It is an alkyl group derived from propane, and is composed of three carbon atoms and seven hydrogen atoms.
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Modify the following three molecules so that they show the form that is dominant at physiological pH a) formic acid b) acetylsalicylic acid (aspirin) CHa c) citric acid H_O- CH2 CHz'
Modifications of the a) formic acid b) acetylsalicylic acid (aspirin) CHa c) citric acid H_O- CH2 CHz' are attached below.
What is formic acid, aspirin and citric acid?With only one carbon, formic acid is the most basic carboxylic acid. is a useful organic synthetic reagent that naturally occurs in a variety of sources, including the venom of bee and ant stings. used primarily as an antibacterial and preservative in animal feed.
A non-steroidal anti-inflammatory drug (NSAID), aspirin is an acetylated salicylate (acetylsalicylic acid) (NSAIDs). These medicines have a variety of pharmacologic effects, including analgesic, antipyretic, and antiplatelet properties, and they lessen the signs and symptoms of inflammation.
Citric acid is primarily used as a flavouring and preservation agent, especially in soft drinks and candies, due to its acidic, sour taste. As a disinfectant and to stabilise or preserve medicines, it is also used. Lemon juice was the original source of the compound known as citric acid.
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A sample of nitrogen occupies a volume of 250 ml at 25 Celsius what volume will it occupy at 95 Celsius
We can use Charles's Law which states that volume and temperature are directly proportional when the pressure and other variable are constant. when temperature increases, the volume of the gas also increases and vise versa.
The new volume it will occupy is 308.72 ml
What is meant by Volume ?
The space occupied within an object's borders in three dimensions is referred to as its volume.It is sometimes referred to as the object's capacity. The capacity of an object is measured by its volume. For instance, a cup's capacity is stated to be 100 ml if it can hold 100 ml of water in its brim. The quantity of space occupied by a three-dimensional object can also be used to describe volume.Bulk and mass are typical synonyms for volume.A three-dimensional object's volume is the area it takes up, and it is expressed in cubic units. Cm3 and in3 are two examples of cubic units.V₂ = V₁T₂/ T₁
= 250 ml × 368 K / 298 K
= 92,000 ml.K / 298 K
= 308.72 ml
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How many peaks appear in the proton spin decoupled 13 C NMR spectrum of the compound below? O 1
O 2
O 3
O 4
O 5
One peak (single) is visible in the decoupling 13C spectra for each distinct carbon in the molecule.
The NMR spectrum: What does it reveal?An analytical chemistry method known as nuclear magnetic resonance (NMR) spectroscopy is used in quality control and research to ascertain a sample's composition and purity as well as its molecular structure. For instance, mixtures containing known substances may be quantitatively analyzed using NMR.
What is NMR, in plain English?NMR is the abbreviation for nuclear magnetic resonance. An NMR device allows for the investigation of a material's molecular structure by seeing and measuring the interaction of nuclear spins when they are exposed to a high magnetic field.
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How many orbitals are described by each of the below combinations of quantum numbers?
n-3, 2-0______________ orbitals
n-4,2-2, m,- 2 ___________orbitals
The number of orbitals is five, and ml=2 refers to the last (fifth) orbital space 4d.
What is quantum numbers?Quantum numbers are used in quantum physics and chemistry to explain the values of conserved quantities in the dynamics of a quantum system. Quantum numbers are the collection of numbers used to characterize the location and energy of an electron in an atom. There are four types of quantum numbers: primary, azimuthal, magnetic, and spin. There are four quantum numbers in atoms: the primary quantum number (n), orbital angular momentum quantum number (l), magnetic quantum number (ml), and electron spin quantum number (ms).
Here,
Quantum numbers (n,l,ml, ms)
n=3. refers to 3rd energy level
3rd energy level has 3 possible values of l
d has 5 different orientations
s=0. p=1. d=2
-2,-1,0,1,2
answer- n=3 l=2. number of orbitals-5
n=4 refers to 4th energy level
4th level has 4 possible l values
Repeat from above for d
s=0 p=1 d=2 f=3
n=4 l=2. ml=2
The number of orbitals is 5 and the ml=2 is referring to the last(5th) orbital space 4d.
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write balanced net ionic equation for the first stage of dissociation of the triprotic acid h3po4.
The first stage of dissociation of the triprotic acid H3PO4 would be the dissociation of the first proton, which can be represented by the following balanced net ionic equation: H3PO4 + H2O → H2PO4- + H3O+.
This equation shows that one molecule of H3PO4 dissociates in water to form one molecule of the dihydrogen phosphate ion (H2PO4-) and one hydronium ion (H3O+). The dissociation of the first proton is usually the strongest one among the three protons in H3PO4, this reaction is known as the first stage of dissociation.It is important to note that this is the net ionic equation, which shows only the species that are directly involved in the reaction and not the spectator ions, or ions that are unchanged in the equation.
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Which one of the following substances does not exist in the indicated solid type? A.graphite–covalent crystals B.Na–metallic crystals C.SiO2–molecular crystals D.NaCl–ionic crystals E.diamond–covalent crystal (Please explain how to do this sort of problem)
C.SiO2–molecular crystals one of the following substances does not exist in the indicated solid type
What kinds of molecular crystals exist?Dry ice (solidified carbon dioxide), solid versions of the noble gases (such as argon, krypton, and xenon), and crystals of several chemical compounds are examples of materials with very weak intermolecular interaction.
Which crystals have covalent bonds?Diamond, silicon, and silicon carbide are examples of hard, usually brittle minerals that form covalent crystals. Each atom of the most basic, monatomic kinds (such as diamond) is surrounded by an amount of atoms equal to its valence.
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10. A gas has a volume of 100.0 mL
at a pressure of 600.0 mm Hg. If
the temperature is held constant,
what is the volume of the gas at a
pressure of 800.0 mmHg?
The pressure of a given mass of an ideal gas is inversely proportional to volume at constant temperature, according to Boyle's law.
P1V1 = P2V2 = (600mmhg*100.0ml = 800mmhg*V2)
The volume of the gas at a pressure of 800 mm Hg is 75 mL.
What does Boyle's law stipulate?This empirical relationship, which Robert Boyle, a scientist, first proposed in 1662, argues that, under constant temperature, the pressure (p) of a given amount of gas changes inversely with its volume (v); in equation form, this means that pv = k, a constant.
What exactly are Boyle's law and Charles law?According to Boyle's Law, as pressure lowers, gas volume grows. According to Charles' Law, when the temperature rises, the volume of the gas also rises.
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How many grams of FeSO_4 (Mw = 152.0 g/mol) are present in a 20.0 ml sample of a 0.500 M solution? A) 65.8 g B) 6.08 g C) 3.04 g D) 1.52 g E) 0.760 g
Answer:
i thinks it is B
Explanation:
Which of the following statements concerning cyclins is not correct?
(A) They catalyze the phosphorylation of cyclin-dependent protein kinases.
(B) They are regulatory subunits for enzymes that catalyze the phosphorylation of proteins.
(C) They are activated and degraded during the cell cycle.
(D) They can become linked to ubiquitin.
(E) They contain specific amino acid sequences that target them for proteolysis.
Reaction of cyclin, mitotic promoting factor or maturing-promoting factor catalyzes the phosphorylation of receptor superfamily of cyclin-dependent kinases.
In relation to protein kinases, each of the following claims is untrue?They remove diphosphate form proteins is the response that is untrue. Proteins do not lose phosphate groups when they are added by kinases. The enzymes known as phosphatases are in charge of removing phosphate groups off proteins. The other claims made concerning protein kinases are all accurate.
Which one of the following sentences concerning cyclin cdk is untrue?Option d is the erroneous statement. Throughout the cell cycle, CDK levels fluctuate. Throughout the cell cycle, each CDK is present in the same quantity. However, each CDK's activity is reliant on the other.
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How many gold atoms are in a 0.434 ounce, 18 K
gold bracelet? (18 K
gold is 75 %
gold by mass.)
The number of gold atoms in 0.434 ounces, 18 K gold bracelet would be 2.82 x [tex]10^{21[/tex] atoms.
Dimensional analysis1 ounce = 28.35 grams
0.434 ounce = 0.434 x 28.35
= 12.3039 grams
Since 18 K gold is 75% gold by mass, the actual amount of gold in the bracelet would be:
12.3039 x 0.75 = 9.23 grams
Equivalent mole of 9.23 grams of gold: mole = mass/molar mass
= 9.23/196.967 = 0.0469 mol
1 mole of substances = 6.022 x [tex]10^{23[/tex] atoms
0.0469 mole of gold = 0.0469 x 6.022 x [tex]10^{23[/tex]
= 2.82 x [tex]10^{21[/tex] atoms
In other words, 0.434 ounces, 18 K gold bracelet would contain 2.82 x [tex]10^{21[/tex] atoms of gold.
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Except for the K shell, the maximum number of electrons that can be in the outermost shell of an atom is
A. 8
B. 16
C. 4
D. 32
A. 8 is the maximum number of electrons that can be in the outermost shell of an atom is
The maximum number of electrons that can occupy the outermost shell of an atom is 8, also known as the octet rule. This means that all elements in the periodic table will have 8 electrons in the outermost shell, except for the elements in the first row of the s-block, which can contain a maximum of 2 electrons, or the elements in the second row of the p-block, which can contain a maximum of 6 electrons. The K shell, or the first energy level of an atom, can contain up to 2 electrons, with the exception of hydrogen, which only has one. The L shell, or the second energy level of an atom, can contain up to 8 electrons. The M shell, or the third energy level of an atom, can contain up to 18 electrons. The N shell, or the fourth energy level of an atom, can contain up to 32 electrons. Hence, the maximum number of electrons that can be in the outermost shell of an atom is 8.
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Option (a) is correct. Except K shell the maximum number of electrons that can be in the outermost shell of an atom is 8. This is according to the octet rule.
According to the octet rule, the outermost shell in an atom cannot have more than eight electrons even if it has a capacity to take up more electrons. The octet rule is explained as a chemical rule that reflects the theory that the elements tend to bond in such a way that each atom has eight electrons in its valence shell giving it the same electronic configuration as a noble gas. It refers to the the tendency of atoms to prefer to have eight electrons in the valence shell. The octet rule states that atoms are at their most stable when they have 8 electrons in their outermost shell. Atoms tend to try and gain or lose electrons until they have eight electrons in their outer shell.
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How quickly can mitosis occur in a paramecium?
two or three times a week
more than once each day
once each day
every two hours
In paramecium which has eukaryotic cells mitosis occurs two or three times a week.
What are eukaryotic cells?Eukaryotic cells are the cells which show presence of nucleus and possess membrane bound organelles.They may be unicellular or multicellular depending on the number of cells present in them.
In eukaryotes , the genetic material is is stored within an organelle which is called as nucleus wherein it is organized in to long molecules which are called as chromosomes.They possess other organelles like mitochondria which are responsible for generation of energy . Endoplasmic reticulum which helps in transport of proteins .
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Which of the following molecular formulas is also an empirical formula
Answer: The molecular formula of ethyl ether is the same as its empirical formula.
Explanation:
Sand and computer chips share which element as their basic component?
O silicon
O carbon
O oxygen
O. silver
in which process is energy absorbed by the substance undergoing the change state?
a.melting or freezing
b.condensation or vaporization
Heat is absorbed by all solids as they melt and turn into liquids. As a result, the substance changing states absorbs energy throughout the melting process.
Melting and boiling will result in the absorption of heat energy. In both condensation and freezing, heat energy is released (temperature is lowered), which causes the kinetic energy of molecules to decrease. As a result, gas transforms into liquid and then solid as a result. Endothermic chemical processes are those that generally absorb (or use) energy. When bonds in the reactants are broken in endothermic reactions, more energy is absorbed than is released when new bonds are created in the products. Positive energy is released during condensation and consumed during vaporization (negative energy).
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"The following name is incorrect. Select the correct IUPAC name.
3−ethyl−3−octen−5−ol
a) 6-ethyl-5-octen-4-ol
b) 6,6-diethyl-5-hexen-4-ol
c) 1,1-diethyl-1-hexen-1-ol"
The actual iupac name for the chemical compounds is 6,6-diethyl-5-hexen-4-ol. The International Union of Pure and Applied Chemistry is a worldwide association of National Adhering Organizations.
Striving to establish vocabulary and nomenclature in order to enhance the chemical sciences. The organisation belongs to the International Science Council (ISC). Chemical compounds are made up of numerous similar molecules (or molecular entities) that contain atoms from multiple chemical elements and are joined by chemical bonds. Therefore, a molecule made up of atoms from only one element is not a compound. Multiple types of atoms are joined together by chemical bonds to form compounds. Compounds can become simpler substances as a result of chemical processes. Water (H2O) and table salt are examples of compounds (NaCl).
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Construct the d-orbital energy diagram of octahedral complex [CoCl_6]^4-. How many unpaired electrons are there in [CoCl_6]^4-? Calculate the Ligand Field Stabilization Energy (LFSE) of this octahedral complex with respect to delta_0.
The d-orbital energy diagram of octahedral complex [CoCl_6]^4- is as follows:
What is octahedral complex?Octahedral complexes are a type of coordination complex consisting of a central atom or ion bound to six peripheral atoms, ions, or groups. The peripheral atoms or groups are arranged in an octahedral structure, consisting of six equidistant vertices connected by eight edges. The most common examples of octahedral complexes are those composed of metal ions and ligands. These complexes can be used in a variety of applications, including catalysis, metal extraction, and drug delivery.
The energy levels of the d-orbitals are organized in a set of 4 degenerate orbitals and each of these orbitals consists of 2 electrons. The 4 degenerate orbitals are: dxy, dyz, dxz and dz2. The dxy and dyz orbitals are the highest in energy and the dz2 orbital is the lowest in energy.
The octahedral complex [CoCl_6]^4- has 6 chloride ligands in an octahedral arrangement around the central cobalt metal ion. The 6 chloride ligands will interact with the metal ion’s d-orbitals, resulting in a splitting of the d-orbitals and the formation of a d-orbital energy diagram.
The d-orbital energy diagram of [CoCl_6]^4- is shown below, with the dxy and dyz orbitals at the highest energy, the dz2 orbital at the lowest energy and the dxz orbital in the middle.
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Which of the following molecules or substances contain, or are derived from, fatty acids? A) Beeswax B) Prostaglandins C) Sphingolipids D) Triacylglycerols
Beeswax, Prostaglandins, Sphingolipids, Triacylglycerols all the molecules are derived from fatty acids all the given options are correct.
Which 4 essential fatty acids are there?Saturated, monounsaturated, polyunsaturated, and trans fatty acids are the four broad categories into which fatty acids can be divided. The risk of coronary heart disease is heightened by trans fats and saturated fatty acids.
A fatty acid typically has a straight chain with an even number of carbon atoms, hydrogen atoms running along it, a carboxyl group (COOH) at one end of the chain, and hydrogen atoms running along it once more. It is an acid because of the carboxyl group (carboxylic acid).
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CH4(g)+2O2(g)→CO2(g)+2H2O(g) ΔH°<0
Which of the following statements must be true for the combustion of CH4(g), represented by the equation above?
A) The bond dissociation energy between O atoms in O2 is greater than the sum of the bond dissociation energies of the two O−H bonds in H2O.
B) More bonds are formed in the products than are broken in the reactants.
C) The sum of the bond dissociation energies of the product molecules is equal to the sum of the bond dissociation energies of the reactant molecules.
D) The sum of the bond dissociation energies of the product molecules is greater than the sum of the bond dissociation energies of the reactant molecules.
The sum of the bond dissociation energies of the product molecules is equal to the sum of the bond dissociation energies of the reactant molecules.
define bond dissociation energies ?
The conversion factor 23.060 kcal/mol (96.485 kJ/mol) for each eV may be used to translate a molar BDE to the energy required to dissolve the bond per molecule.
Bond dissociation energy values have been measured using a variety of experimental techniques, including spectrometric determination of energy levels, radical generation via pyrolysis or photolysis, chemical kinetics and equilibrium measurements, and various calorimetric and electrochemical methods. Nonetheless, bond dissociation energy measurements are difficult and vulnerable to significant error. The bulk of currently known values are within 1 or 2 kcal/mol (4-10 kJ/mol) of being correct. Furthermore, values measured in the past, particularly prior to the 1970s, can be unreliable and have been subject to revisions of the order of 10 kcal/mol.
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Draw curved arrows to show the movement of electrons in this step of the mechanism Arrow-pushing Instructions ~X OH OH H3C HaC CH3 CH3
The flow of electrons during this process stage Pushing Instructions for Arrows.
[tex]$$\mathrm{X} \mathrm{OH} \mathrm{OH}\mathrm{H}_3 \mathrm{C} \mathrm{HaCl}_3 \mathrm{CH}_3$[/tex]
To depict how electrons are moving throughout this stage of the process, draw curving arrows.
The mobility of an electron during a bond-making or bond-breaking process is depicted by curved arrows. The location of the electron or electron pair's origin is shown by the foot of the arrow, and their destination is indicated by the head of the arrow.
The shorthand for describing how electrons are moving in a process is "arrow pushing." The electron-rich chemical serves as the starting point for an arrow, while the electron-deficient compound serves as its destination.
A negatively charged subatomic particle known as an electron can either be free or attached to an atom. One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom. Protons, neutrons, and electrons collectively
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if the products of a chemical reaction contain less energy that reactants, the reaction must
Exothermic reaction (or exergonic but that is used less often)
a tank at is filled with of carbon monoxide gas and of chlorine pentafluoride gas. you can assume both gases behave as ideal gases under these conditions.calculate the mole fraction of each gas. round each of your answers to significant digits.
The ideal gas law and the equation for the mole may be used to compute the mole fraction and partial pressure.
The definition of ideal gases states that they are hypothetical gases that may be used to simulate the behaviour of actual gases. Individual gaseous particles must have no volume and neither be attracted to nor repelled by one another in order for it to be termed perfect. The ideal gas law is referred to as,
PV = n RT
Consider the scenario where 18.0g of carbon monoxide and 10.6g of chlorine pentafluoride gas are added to a 6.000L tank at 19.2°C.
CO mole = 18/28 = 0.6428
mole ClF5 is equal to 10.6/130.445, or 0.081260.
then
mole total is 0.081260 + 0.6428 = 0.72406 mole.
PV = n RT
P = n RT/V equals (0.72406) (0.082) (19.2+273) / (6) = 2.89146 atm.
Mole fraction CO is equal to 0.6428/0.72406, or 0.8877.
CO has a partial pressure of 2.5667 atm (0.8877 * 2.89146).
CF5's mole fraction is 1-0.8877 = 0.1123.
CF5 has a partial pressure of = 0.1123*2.89146= 0.32471 atm,
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Note: The correct question would be as bellow,
A tank at is filled with of carbon monoxide gas and of chlorine pentafluoride gas. you can assume both gases behave as ideal gases under these conditions. calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank. be sure your answers have the correct number of significant digits. carbon monoxide mole fraction: partial pressure: chlorine pentafluoride mole fraction: partial pressure: total pressure in tank:
Ideal gas equation is used that relates the pressure, temperature, volume and number of moles of a gas, the given parameters' that are asked solved in the below section.
Ideal gases are hypothetical gases that may be used to simulate the behavior's of actual gases. The ideal gas law can be expressed as follows,
PV = n RT
Consider the scenario where 18.0g of carbon monoxide and 10.6g of chlorine pentafluoride gas are added to a 6.000L tank at 19.2°C.
CO mole = 18/28 = 0.6428
Mole ClF5 is equal to 10.6/130.445, or 0.081260.
then
Total number of moles= 0.081260 + 0.6428 = 0.72406 mole.
PV = n RT
P = n RT/V equals (0.72406) (0.082) (19.2+273) / (6) = 2.89146 atm.
Mole fraction CO is equal to 0.6428/0.72406, or 0.8877.
CO has a partial pressure of 2.5667 atm (0.8877 * 2.89146).
CF5's mole fraction is 1-0.8877 = 0.1123.
CF5 has a partial pressure of = 0.1123*2.89146= 0.32471 atm,
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Complete question-
A tank at is filled with of carbon monoxide gas and of chlorine pentafluoride gas. you can assume both gases behave as ideal gases under these conditions. calculate the mole fraction and partial pressure of each gas, and the total pressure in the tank. be sure your answers have the correct number of significant digits. carbon monoxide mole fraction: partial pressure: chlorine pentafluoride mole fraction: partial pressure: total pressure in tank.
Order the following elements according to decreasing electronegativity: C, Ca,Cl,Cs and Cu
The decreasing order of electronegativity is Cl > Cu > C > Ca > Cs.
Electronegativity: What is it?The ability of an element to draw electrons to itself when it is chemically connected to another element is known as its electronegativity. Electrons will typically be attracted to elements with higher electronegativities, which will result in increased electronegativity. Pauling Electronegativity Scale is used to determine the order of the elements.
An atom's capacity to attract shared-pair electrons to itself within a molecule is referred to as electronegativity in chemistry. Atoms on the left and right sides of the periodic table have varying degrees of electronegativity.
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Determine the number of sulfur atoms in 27.1 g of molecular sulfur (S8).
0.845
5.27 x 10^23
5.09 x 10^25
2.07 x 10^19
0.106
The correct response is C) [tex]5.09*10^{23}[/tex]. The number of sulfur atoms is [tex]5.09*10^{23}[/tex].
Chemical element sulphur has the symbol S and atomic number 16. Sulfur, which is categorized as a nonmetal, is a solid at ambient temperature. Due to the weak S=S double bonds that sulphur does not form, elemental sulphur is typically made up of cyclic S8 molecules, in which each atom completes its octet by creating single bonds to two adjacent atoms, as seen in the figure below. We are aware that sulphur, like SF6, can contain more than eight electrons using its vacant valence d orbitals. The Sulphur is once again six-coordinated in an alternate structure (b), which can be expressed with S=O double bonds. In 27.1 g of molecular Sulphur, there are the following Sulphur atoms:
27.1 g S8 x ([tex]1[/tex] mol S8/32.066 g S8) x ([tex]6.022*10^{23}[/tex] atoms/[tex]1[/tex] mole)
[tex]=5.09*10^{23}[/tex]
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Part A Which Of The Compounds Below Would Contain Polar Covalent Bonds? F2, N2O, KCI O KCI Only O Both F2 And N20 O N20 Only O F2 Only
F2 Of The Compounds Below Would Contain Polar Covalent Bonds.
How can you determine whether a bond is polar covalent?Although there are no strict guidelines, the general rule is that a bond is deemed nonpolar if the difference in electronegativities is less than or equal to 0.4; if the difference is larger than 0.4, the bond is termed polar.
Is there polar covalent bonding in f2?A fluorine molecule with two atoms is this. One covalent link exists because two fluorine atoms share the same valence electron pair. Due to the fact that the atoms are from the same element, the connection is nonpolar.
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Which one of the following combinations of names and formulas of ions is incorrect?
A O2- oxide
B Ca2+ calcium
C ClO3- chlorate
D HCO3- hydrogen carbonate
E NO2- nitrate
The combinations of names and formulas of ions that is incorrect is NO2- nitrate.
What is ions?An ion is an atom or molecule with a charge because it has a different amount of electrons than protons. Any atom or group of atoms with one or more positive or negative electrical charges is referred to as an ion. An ion is an electrically charged atom (or collection of atoms). It is generated when an atom loses or gains an electron. Ions are classified into two types: cations and anions. When a sodium atom loses one electron, a sodium ion (Na+) is created. A cation is a sodium ion.
Here,
NO2- nitrate is an erroneous combination of ion names and formulae.
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expected to strike more
frequently this century?
formed in the
atmosphere?
likely become stronger or
weaker this century?
Which areas are at
the highest risk for
hurricanes?
Which types of hurricanes
are expected to drop in
frequency by more than
25% this century?
How many category 4
and 5 hurricanes can
we expect this century?
Evidence of a Changing Climate: Mastery Test
The type of hurricane is expected to strike more frequently this century will be Category 4 + 5C.
What is hurricane?One of nature's most potent storms is the hurricane. They cause tornadoes, rip currents, and inland flooding by way of strong winds, storm surge flooding, and heavy rainfall.
Hurricanes are storms with maximum sustained winds of 74 mph or higher. Based on a hurricane's maximum sustained winds, the Saffir-Simpson Hurricane Wind Scale assigns a hurricane a rating, or category, from 1 to 5.
Strong winds, a spiral arrangement of thunderstorms that produce heavy rain and squalls, a low-pressure center, and a closed low-level atmospheric circulation are the characteristics of a tropical cyclone, a rapidly rotating storm system.
In this case, the chart shows how climate change and rising ocean temperatures might affect the types of hurricanes we see this century and the bars show the results from different math models used to make the predictions. hurricane is expected to strike more frequently this century will be Category 4 + 5C. This can be seen in the diagram.
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The chart shows how climate change and rising ocean temperatures might affect the types of hurricanes we see this century. The bars show the results from different math models used to make the predictions.
Category 1 includes the least powerful hurricanes. Categories 2 and 3 are moderate hurricanes. Categories 4 and 5 include the most powerful hurricanes.
A. Which type of hurricane is expected to strike more frequently this century