Which of the following best describes the kinetic theory?
A. Energy is conserved when converted to another type of energy.
B. Atoms and molecules are always moving or vibrating.
C. Electron pairs move apart to form more stable molecules.
D. Atoms rearrange in molecules to form new compounds.
Answer:B
Explanation:
Atoms and molecules are always moving or vibrating. (just took the test)
Answer:
★ B. Atoms and molecules are always moving or vibrating.
Explanation:
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what are the elements in the first period
Answer:
Explanation:
There are only two elements in the first period: hydrogen and helium. We can explain why there is less elements in the first row in modern theories of atomic structure.
Answer:
"Hydrogen and Helium". Hydrogen and Helium are the elements of the first period in the modern periodic table.
Explanation:
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Answer:
Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include the elements iron, nickel, and cobalt, and their alloys, some alloys of rare-earth metals, and some naturally occurring minerals such as lodestone.
Gravitational force is is a force that attracts two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. Every object, including you, is pulling on every other object in the entire universe!
An example of gravitational force in the real world is the force that holds the gases in the sun. The force that causes a ball you throw in the air to come down again. The force that keeps the Earth and all of the planets in line in the proper position in their orbits around the sun.
What do you call a rock that cooled rapidly outside a
volcano?
Explanation:
intrusive rocks.....
.
Which is an inequality?
A. 1 <4
C. 2 = 1 + 1
O D. 3
Explanation:
step 1. an inequality has either a <, <=, >=, or a >.
step 2. 1 < 4 is an inequality.
step 3. the answer is A.
what does solubility mean?
Solubility means the ability of a solute to dissolve in solvent to form a solution.
What is solubility?Solubility is defined as the maximum amount of a substance that will dissolve in a given amount of solvent at a particular temperature.
The solute can be a solid, liquid or a gas.
The solubility of a solid or a liquid solute in a solvent is affected by the temperature, while the solubility of a gaseous solute is affected by both the temperature and the pressure of the gas.
Therefore, Solubility means the ability of a solute to dissolve in solvent to form a solution.
Learn more about Solubility, here:
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What are water and carbon dioxide converted into by the end of
photosynthesis? *
air and sunlight
water and air
sugar and water
sugar and oxygen
Answer:In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. ... In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process. Carbon dioxide and water are products of this reaction.
Explanation:
3. Among the pairs of organic compounds below. Which is
a. water, lubricating oil b. kerosene, liquefied perde
Answer:
A is the right answerA is the right answerA is the right answerA is the right answer
Explanation:
What colour change would you notice with China rose indicator when you add it to soap water and vinegar?
I'm having trouble balancing these. Can you help me
Answer:
Oh Okay
I hope u have a better rest of ur day
a rigid metal container has a volume of 20.0 L with nitrogen gas to a pressure of 197atm at 28.0 C. How many moles of gas are present in the container
Answer:
i wish i knew sorry
Explanation:
9. Which of the following is a chemical property of water at 4°C? its temperature its state its color
what mixture is salt and water?
a.solutions
b.colloids
c.suspensions
Are monomers saturated?
Answer:
vwi AC wjkw Jew hill to a friend about our services to our terms of this website are not responsible for all your hard disk space and the rest is just the same time the page you are not logged into the air and the other
What is the molecular formula of a compound with an empirical formula of CH and a molecular mass of 78 amu?
Answer:
Answer is 1
Explanation:
The outpost structure of the bacteria cell is the.
Which of the following is
needed to determine velocity?
A) Direction only
B) Direction & time
C) Distance & direction
D) Distance, time and direction
Direction only
Direction & time
Distance & Direction
O Distance, time and direction
Answer:
distance and time are needed to find velocity
The intensity of a sound wave increases as the wave spreads out from the source of the sound
Answer:
The more spread out their energy becomes
Use the following equation to answer the questions below.
CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (g)
1. What type of reaction is this? Why do you say it is this type of reaction? Support your claim with evidence. (2 points, 1 point valid type of reaction, 1 point valid evidence)
2. What is the mole ratio of methane to water in the reaction? (1 point correct mole ratio)
3. How many moles of water are produced from the reaction of 50.0g of methane (CH4)? Show your work (2 points, 1 point valid answer, 1 point valid work)
Answer:
1-Double replacement
Explanation:
Multiple Choice: Encircle the letter of the correct answer.
1. Which type of matter has the molecules packed closer together?
a. Solid
b. Liquid
c. Gas
d. Plasma
2. Matter is made up of __________.
a. Molecules
b. Particles
c. Atom
d. All of them
3. Particles with more energy move ________ than particles with less
energy.
a. Slower and closer together
b. Slower and farther apart
c. Faster and farther apart
d. Faster and closer together
4. Which best describes the particles in a liquid?
a. More freely moving than a gas
b. More freely moving than a
solid
c. Less freely moving than a
solid
d. Completely unmoving
5. Which of the following statements describes a mass?
a. The force of attraction between two bodies.
b. The force of gravity exerts on a body of mass.
c. The amount of matter in an object.
d. The weight of the object from place to place.
6. Any sample of matter has mass and takes up space. The main reason
for this is because __________.
a. All matter is heavy
b. Matter can be a gas
c. Matter is made up of tiny particles that have mass and take up space
d. The Earth is made of matter
7. When a thermometer is heated, the red liquid inside the thermometer
moves up. This is mainly because __________.
a. The red liquid is thin.
b. The molecules of the liquid move faster and get a little further apart
c. Hot liquid is lighter
d. The glass of the thermometer gets hot
For question numbers 8-10,
8. To describe a liquid, you could say:
a. The particles of a liquid are not attracted to one another
b. The particles of a liquid are in motion
c. The particles of a liquid are not able to move past one another
d. A liquid has no mass but takes up space
9. To describe a solid, you could say:
a. The particles of a solid are not attracted to each other
b. The particles of a solid can move past one another
c. The particles of a solid vibrate but do not move past one another
d. A solid has mass but does not take up space
10. To describe a gas, you could say:
a. The particles are very attracted to each other
b. The particles are not very attracted to each other
c. The particles are close together like a liquid
d. The particles of a gas are closer apart than the particles in a liquid or
solid
Answer:
1. solid
2. all of them
3. Faster and farther apart
4. more freely moving than a solid
5. the amount of matter in an object
6. matter can be a gas.
7. the glass of the thermometer gets hot.
8. the particles of a liquid are unable to move past each other.
9. the particles of a solid vibrate but do not move past one another.
10. the particles are not attracted to one another.
Which pair could be genetic clones?
look at the photo
Answer:
cow female
Explanation:
What do the arrows in the circle indicate
Na2O + H2O => NaOH *
Your answer
Balancing equations only the coefficient ratios
Answer:
1, 1, 2
Explanation:
You need to have the same amount of atoms of everything element on both the products and reactants side
Reactants:
Na=2
O=2
H=2
Products:
Na=2
O=2
H=2
How are you able to light a bunsen burner
Answer:
Lighting Bunsen Burner:
Explanation:
Close needle valve and collar. Open gas valve fully. Open needle valve 1/2 turn. Use the spark/lighter to light the flame.
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ok so pls watch episode 18 (Eureka Videos is the channel) and then answer all these
When molecules evaporate they are gaining enough _______ to break the forces of __________ holding them together. This might be compared to the popping of popcorn.
Why can't we see the vapour molecules that have escaped?.
How does increasing the heat affect the rate of molecules popping out into the vapour state?
The colder molecules get, the _________ they move
Name the following compound: KI
Explanation:
--KI:Potassium iodide
Given the following equation: 2C6H6 + 15O2 - 12CO2 + 6H2O
How many moles of O2 are needed to react with 4.0 moles of
C6H6?
A. 30 Moles
B. 12 moles
C. 4.0 moles
D. 24 moles
Answer: 30 moles
Explanation:
2C6H6 + 1502 -------> 12CO2 + 6H2O from reaction
2 mol 15 molgiven 4.0 mol
x molx = 4.0*15/2 = 30. mol
Aluminium can be manufactured from the electrolysis of a molten mixture of aluminium oxide and
cryolite. In this process, which electrode must be continually replaced
Answer:
The carbon anode
Explanation:
The carbon anode is continually replaced because it burns off as carbon IV oxide gas by reacting with the oxygen had produced at the anode.
What is the molarity of a solution in which 35 mole of AgNO3 is dissolved in 5 L of solution?
Answer:
23
Explanation:
Answer:
0.118m
Explanation:
What volume of chlorine gas (Cl2), measured at STP, can be produced by the decomposition of 73.0g of hydrogen chloride gas (HCl), according to the balanced equation? (the other product is hydrogen gas (H2))
Answer:
Explanation:
2HCl = H₂ + Cl₂
2 mole 1 mole 1 mole
73 gram HCl = 73 / 36.5 = 2 mole of HCl
2 moles of HCl will produce 1 mole of chlorine gas .
At STP , one mole of chlorine gas has volume equal to 22.4 litre .