Answer:
Explanation:
All forms of energy that may move in waves, including as light, x-rays, radio signals, heat, and microwaves, are included in the electromagnetic spectrum. These waves all have an abundance of energy in them. Additionally, they can all fly through outer space.
Light energy is a type of electromagnetic energy, while heat energy is a type of kinetic energy made up of the random motion of a material's particles. This is the main distinction among light energy and heat energy. Despite the fact that light and heat are both forms of energy, both are not the same. All forms of energy that may move in waves, including as light, heat, x-rays, radio signals, ultraviolet waves, and microwaves, are included in the electromagnetic spectrum. These waves all have an abundance of energy in them. Additionally, they can all fly through outer space.
To know more about heat and light, here:
https://brainly.com/question/24822610
#SPJ6
PLEASE HELLLLOOPLPPPPP
Answer:
the answer is d.Class there u go i hope its riht
1. When solute dissolves in water
Explanation:
The water molecules behave like tiny magnet attracted to metal ....As each solute molecule gradully breaks away,water molecules surround it, and it drifts it to solution. Is the solute is a solid,the prosses happens gradually
What does the 2 in 2 CO represent?
Answer:
CO2 is the chemical formula for the compound carbon dioxide. C is the symbol for the element carbon, and O is the symbol for oxygen.
Explanation:
Carbon Dioxide has One Carbon and Two Oxygens.
Which statement identifies an accurate relationship between metals and nonmetals in the same period of the Periodic Table?
A
Metals generally have higher electronegativity than nonmetals in the same period.
B
Nonmetals generally have a lower, first-ionization energy than metals in the same period.
с
Metals generally have smaller radii than nonmetals in the same period.
D
Nonmetals generally have a higher electronegativity than metals in the same period.
Answer:
D.) Nonmetals generally have a higher electronegativity than metals in the same period.
Explanation:
A.) is incorrect because within the same period, nonmetals have the higher electronegativity values.
B.) is incorrect because ionization energy usually increases as one goes across the periodic table, meaning metals will generally have lower, first-ionization energies. This is because the protons in the atoms increase as you travel across the periodic table while the outer shell continues to occupy the same energy level. The more protons there are, the greater the attraction between the electrons and protons, making it more difficult to ionize the atom.
C.) is incorrect because within the same period, nonmetals will have the smaller radii. This is because as you go across a period, the protons in the atom increase. The more protons there are, the greater the pull they will have on their electrons. This shrinks the size of the atom.
D.) is correct because as you go across a period, the electronegativity increases. These atoms are more likely to attract electrons due to their higher proton count while simultaneously being a smaller size.
separate the precipitate formed when aqueous silver nitrate is added to
aqueous sodium chloride.
This reaction produces a white precipitate. It is silver chloride:
[tex]AgNO_{3} + NaCl[/tex] → [tex]AgCl[/tex]↓ [tex]+[/tex] [tex]Na^{+} + NO^{-} _{3}[/tex]
The correct formula for the ionic compound formed between Ca and I is CaI
True or False
The statement "correct formula for the ionic compound formed between Ca and I is CaI" is false.
What is chemical formula?Chemical formula is using of the elements and number to write a compound or element using the chemical terms. The chemical formula re the short form of the name of the elements and compounds.
The chemical formulas or equation are written by using the balanced form of equation by using the number of moles and charge on the elements.
Ca and I are the chemical element of the periodic table, and they combine and written as calcium iodide, CaI₂, because they are ionic compound and iodine contain charge of two. Ionic compounds are the compounds that are formed when they lose to gain electrons to form a bond.
Thus, the statement is false.
To learn more about chemical formula, refer to the link:
https://brainly.com/question/11995171
#SPJ2
To separate a mixture of p-toluidine and p-nitrotoluene dissolved in ether:
a. extract the ether solution with aqueous HCl and treat the water layer with aqueous NaOH.
b. extract the ether solution with aqueous NaOH and treat the water layer with aqueous HCl.
c. extract the ether solution with water and treat the water layer with aqueous NaOH.
d. extract the ether layer with aqueous HCl and treat the ether layer with aqueous NaOH.
e. extract the ether solution with aqueous HCl and treat the ether layer with aqueous HCl.
Answer:
extract the ether solution with aqueous HCl and treat the water layer with aqueous NaOH.
Explanation:
p-toluidine is a basic compound, it can react with aqueous HCl to form p-Toluidine hydrochloride and is recovered subsequently.
An alkali such as NaOH can be used to recover the p-toluidine. The neutral compound, p-nitrotoluene, will remain in the ether layer and can be recovered by evaporating the solution.
According to the rate law, how do concentrations affect rate?
A. The rate increases as concentrations decrease.
B. The rate increases as concentrations increase.
C. It is impossible to tell how the rate is affected.
D. The rate is independent of concentrations.
Answer:
Rate Laws. Typically, reaction rates decrease with time because reactant concentrations decrease as reactants are converted to products. Reaction rates generally increase when reactant concentrations are increased.
Order these elements from LEAST to GREATEST atomic mass.
A) Li, He N.S
B) He, Li, N, S
C) N, He, Li, s
D) S, N, Li, Hs
Answer:
B) He, Li, N, S
Explanation:
mass of helium < mass of lithium < mass of nitrogen < mass of sulfur
HEY I NEED ALL ANSWERS RIGHT NOW IT'S MISSING AND MY TEACHER ARE GRADING THEM NOW YOU WILL BE MARKED BRAINIEST
Molar mass of butane:-
4(12)+10=58uMoles of Butane:-
100/58=1.7mol#16
2mols of Butane produce 8mol CO_21mol of butane produces 4mol CO_2Moles of CO_2
4(1.7)=6.8molMass of CO_2:-
44(6.8)=299.2g#17
2mols of butane need 13mol O_21mol of butane needs 6.5mol O_2Moles of O_2
6.5(1.7)=11.05molMass of O_2
11.05(32)=353.6gArrange elements in decreasing order of the number of valence electrons
Answer:
It’s voice and a
Explanation:
1. What is contained in the nucleus of an atom?
Answer:
The atom consists of a tiny nucleus surrounded by moving electrons. The nucleus contains protons, which have a positive charge equal in magnitude to the electron's negative charge. The nucleus may also contain neutrons, which have virtually the same mass but no charge.
Please mark as brainliest;)
Select the Multiple Atoms tab. Select the Continuous option from the Electron Production control and also select the Spectrometer and Squiggles options. Now select hydrogen, run the experiment, and note the colors and wavelengths of the photons shown in the spectrometer readings. Do the same with neon. How would you differentiate hydrogen and neon using the spectrometer readings?
Answer:
hydrogen and neon can be distinguished based on their atomic spectra, neon has wavelengths in the range of 540 nm to 750 nm and the colors of light are observed as green, yellow, orange, and red.
hydrogens wavelengths are in the range of 410 nm to 660 nm. the colors obeserved are purple, dark blue, light blue, and red.
so they can be differentiated by their wavelengths and the colors of light they emit.
C. At an old gas station, gasoline leaks from an underground storage tank.
Classification:
Explanation:
To pevent gasoline leaks, regular maintenance checks and replacement of damaged underground tanks is required.
What causes gasoline leak?Gasoline leaks occurs when tanks are rusty and corroded or where there are loose fitting of pipes and connection points.
Gasoline leak presents a serious environmental hazard as well as threat to life and properties.
Gasoline leaks can cause fire outbreaks which would destroy properties and endanger lives.
Gasoline leaks can also cause land and water pollution killing important aquatic and soil organisms.
Therefore, regular maintenance checks and replacement of damaged underground tanks will prevent gasoline leaks.
Learn more about gasoline leaks at: https://brainly.com/question/10338424
Answer:
To pevent gasoline leaks, regular maintenance checks and replacement of damaged underground tanks is required.
What causes gasoline leak?
Gasoline leaks occurs when tanks are rusty and corroded or where there are loose fitting of pipes and connection points.
Gasoline leak presents a serious environmental hazard as well as threat to life and properties.
Gasoline leaks can cause fire outbreaks which would destroy properties and endanger lives.
Gasoline leaks can also cause land and water pollution killing important aquatic and soil organisms.
Therefore, regular maintenance checks and replacement of damaged underground tanks will prevent gasoline leaks.
Explanation:
Give the person who answered this question for real brainliest, they deserve it :D
A chemist has a 0.200 M solution of potassium hydroxide (molar mass = 56.1g/mol). What mass of KOH is dissolved in 3.20 L of the solution?
Answer:
35.904g
Explanation:
[tex]concentration = \frac{mole}{volume} \\ 0.200 = \frac{n}{3.20} \\ n = 0.640mol \\ n \frac{mass}{molar \: mass} \\ mass = n \times molar \: mass \\ molar \: mass = 56.1gmol {}^{ - 1} \\ mass = 56.1 \times 0.640 \\ mass = 35.904g[/tex]
If 0.200 mol of copper(II) sulfate is dissolved in 275 g of H2O, what is the percent by weight of the copper(II) sulfate in the solution
Answer:
I think its 0.200x159.6=31.92 if this is correct can u mark me brainliest
When a 16.8 mL sample of a 0.410 M aqueous hydrocyanic acid solution is titrated with a 0.408 M aqueous sodium hydroxide solution, what is the pH after 25.3 mL of sodium hydroxide have been added?
pH =
From the calculations and results obtained, the pH of the solution is 12.85. This implies that the solution is basic or we can say it is alkaline.
What is pH?pH is a scale that shows the acidity or alkalinity of a solution.
Number of moles of hydrogen cyanide = 0.410 M * 16.8 /1000 L = 0.0069 moles
Number of moles of NaOH = 0.408 M * 25.3/1000 L = 0.01 moles
Since the reaction is 1:1, hydrogen cyanide is the limiting reactant.
Number of moles of NaOH left over = 0.01 moles - 0.0069 moles
= 0.0031 moles
Total volume = 16.8 mL + 25.3 mL = 42.1 mL or 0.042 L
Molarity of left over hydroxide ions = 0.0031 moles /0.042 L
= 0.07 M
pOH = - log(0.07 M) = 1.15
pH = 14 - 1.15 = 12.85
Learn more about pH: https://brainly.com/question/15289741
Distillation is a process used to separate a mixture to liquids based on different
boiling points
Explanation:
It is used to separate two immiscible liquids
What is saturation
Give two examples each of acid and basic salt
Answer:
saturated refers to a point of maximum concentration, in which no more solute may be dissolved in a solvent.
Acid:sulfuric,nitric
Basic salt:Calcium carbonate (CaCO3)
Sodium acetate (NaOOCCH3)
Explanation:
mark me brainliest
As you move down the periodic table atoms get bigger. This is because ____________.
Answer:
Because the atoms have more energy levels
Explanation:
Hope this helps:)....if not sorry for wasting your time and may God bless you:)
What element is this
Answer:
the element is lithium answerWhat is the main molecule that provides the energy to produce ATP?
Answer: glucose
Explanation:
Help I need to show work!
Question: The result of a reaction of propane and air gave 11.21 g CO2 and 33.0 grams water according
to the following equation: C3H3 + 5 02 + 3 CO2 + 4 H20
a) What type of reaction (name reaction) is this?
b. How many grams of carbon were produced?
C. How many grams of hydrogen were produced?
Answer:
a. Combustion.
b. [tex]m_C=3.057gC[/tex]
c. [tex]m_H=3.67gH[/tex]
Explanation:
Hello.
a. In this case, given the reaction by which propane is converted into carbon dioxide and water:
[tex]C_3H_8+5O_2 \rightarrow 3CO_2+4H_2O[/tex]
It is known as a combustion reaction since it is about a fuel (here propane) which is burnt by the oxygen contained in the air (21%).
b. Since the carbon dioxide contains all the carbon in the products based on the law of conservation of mass, the yielded grams are computed via a mole mass relationship:
[tex]m_C=11.21gCO_2*\frac{12gC}{44gCO_2}=3.057gC[/tex]
Since 44 grams of carbon dioxide contain 12 grams of carbon.
c. As well as b., all the hydrogen is given off in form of water, thus, the required mass turns out:
[tex]m_H=33.0gH_2O*\frac{2gH}{18gH_2O}=3.67gH[/tex]
Since 18 grams of water contain 2 grams of hydrogen.
Best regards.
what is chemical bond
Answer:
A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.
Explanation:
The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.
A scientist performed four investigations using eight different liquids. In each investigation, the scientist combined two of the liquids under a fume hood and recorded observations in the table below.
Scientist’s Observations
Investigation
Observations After Two Liquids Are Combined
1
The temperature of the combined liquids increased, and a solid substance formed.
2
The temperature of the combined liquids decreased, and bubbles formed.
3
One liquid settled to the bottom of the beaker, and the other liquid rose to the top.
4
The combined liquids turned from clear to a bright purple.
In which investigation is it likely that the liquids reacted chemically?
Substance 1
Substance 2
Substance 3
Substance 4.
Chemical reactions are indeed an essential aspect of technology, society, and life itself. Therefore, in Substance 2 investigation, liquids reacted chemically.
What is Chemical reaction?A chemical reaction is a process that converts one or more compounds, known as reactants, into one or more distinct substances, known as products. Chemical elements and compounds are examples of substances. A chemical reaction reconfigures the component atoms of the reagents to produce various products.
Chemical reactions are indeed an essential aspect of technology, society, and life itself. Many activities involving oxidation processes that have recognized and practiced for hundreds of years include burning fuels, melting iron, creating glass or pottery, brewing beer, including making wine and cheese. In Substance 2 investigation, liquids reacted chemically.
Therefore, in Substance 2 investigation, liquids reacted chemically.
To learn more about Chemical reaction, here:
https://brainly.com/question/24123817
#SPJ6
9. The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is ____. a. a mirror image of that of the other side
b. younger than on the other side
c. much different from the magnetic pattern found in rocks on land d. at right angles to the ocean ridge
Answer:
is this for quizzes
Explanation:
asdfghkl, dftyuil, cftyhjm
Answer:
The answer is A Mirror Image Of That Of The Other Side
In Earth’s mantle there are convection currents. The convection currents flow in a _________ shape. As the hot magma ________________, the colder magma ___________________. These convection currents are a continuous_______________. This means that convection currents will _____________ stop because they have a constant source of heat energy. Convection currents move the lithosphere and cause many events on the surface including_____________ and _____________.
Words:
rises
eventually
system
earthquakes
triangular
circular
tornadoes
volcanoes
never
sinks
Answer:
4
5
2
6
3
1
6
7
.......
.
.
.
.
.
..
Does photosynthesis take place in animals, plants, or both animals and plants?
only animals
only plants
both animals and plants
Ionic compounds form
crystal structures.
molecular structures.
pure elements.
neutral elements.
Answer:
A, crystal structures.
Explanation:
Answer:
A
Explanation:
If the pH of an acid rain storm is approximately 3.0, how many times greater is the [H ] in the rain than in a cup of coffee having a pH of 5.0
Taking into account the definition of pH, the [H⁺] in the rain is 100 times greater than in a cup of coffee.
Definition of pHpH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:
pH= - log [H⁺]
The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.
Comparison of [H⁺]In this case, you know:
pH= 3pH= 5You can replace this values in the definition of pH:
3= -log [H⁺] → [H⁺]=1×10⁻³ M5= -log [H⁺] → [H⁺]=1×10⁻⁵ MSolving:
[H⁺]=1×10⁻³ M[H⁺]=1×10⁻⁵ MComparing [H⁺], you get:
[tex]\frac{1x10^{-3} }{1x10^{-5} } =100[/tex]
Finally, the [H⁺] in the rain is 100 times greater than in a cup of coffee.
Learn more about pH:
https://brainly.com/question/26424076
https://brainly.com/question/26524338
https://brainly.com/question/13557815
https://brainly.com/question/24595796
https://brainly.com/question/24753206