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2 years ago

PLEASE HELP ASAP TAKING A TEST!

Chemistry

1 answer:

pav-90 [236]2 years ago

6 0

Answer:

As a substance changes from a solid to a liquid to a gas, its molecules first the molecules are moving fast enough, they are able to "escape." They leave the surface of the liquid as gas molecules. Evaporation is not the only process that can change a substance from a liquid to a gas. The same change can occur through boiling.

Explanation:

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If a neutral atom has 24 electrons and 26 neutrons how many protons does it have?

Salsk061 [2.6K]

Answer:

Explanation:

The number of protons in the atom of the neutral element will also be 24.

Protons are the positively charged particles in an atom.

Electrons are the negatively charged particles

Neutrons do not carry any charges at all

Now, in a neutral atom, the charge is balanced and the number of protons and electrons are the same in the atom.

So, since we have been given that the atom has 24 electrons, the number of protons will be 24.

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2 years ago

Which objects in space formed from the huge disk of ice and debris beyond the outer planets? Check all that apply. Pluto comets

Anni [7]

Answer: -

A solar nebula is a rotating cloud of gas and dust from which the sun and the planets formed.

A planetesimal is a small body from which planet originated in the early stages of development of the solar system.

Kupier belt is region of the solar system that is just beyond the orbit of Neptune and that contains bodies made mostly of ice. This is the region of the solar system that contains small bodies that are made mostly of ice.

Thus Pluto is formed from the huge disk of ice and debris beyond the outer planets. Comets originating from the Kupier belt are also composed of ice and debris.

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3 years ago

13. What is the total pressure inside the container

nasty-shy [4]

Answer: The total pressure inside the container is 77.9 kPa

Explanation:

Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.

To calculate the total pressure inside the container, we use the law given by Dalton, which is:

$P_T=p_{N_2}+p_{O_2}+p_{Ar}$

We are given:

Vapor pressure of oxygen gas, $p_{O_2}$ = 40.9 kPa

Vapor pressure of nitrogen gas, $p_{N_2}$ = 23.3 kPa

Vapor pressure of argon, $p_{Ar}$ = 13.7 kPa

Putting values in above equation, we get:

$p_T=23.3+40.9+13.7\\\\p_{T}=77.9kPa$

Hence, the total pressure inside the container is 77.9 kPa

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3 years ago

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3 years ago

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3 years ago