How do I know what is an Ideal Gas


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Maria Trujillo 1L
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Joined: Fri Apr 06, 2018 11:05 am

How do I know what is an Ideal Gas

Postby Maria Trujillo 1L » Sun Feb 10, 2019 9:09 pm

People keep mentioning ideal gasses, and I have no idea what is considered an ideal gas? How do you know the difference?

Te Jung Yang 4K
Posts: 63
Joined: Fri Sep 28, 2018 12:18 am

Re: How do I know what is an Ideal Gas

Postby Te Jung Yang 4K » Sun Feb 10, 2019 9:32 pm

An ideal gas is a man-made notion about a "perfect" gas to simplify calculations. It refers to a gas in which the molecules don't have any volume and don't interact with one another, which of course does not exist in real life.

All our equations are assuming that the gas is ideal, and in questions you can generally assume that the gases can be considered ideal.

Rosha Mamita 2H
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Re: How do I know what is an Ideal Gas

Postby Rosha Mamita 2H » Sun Feb 10, 2019 9:41 pm

An ideal gas is a gas that would take up little to no volume in an area of high temperature and low pressure, and so if a gas behaves enough like an ideal gas, the ideal gas law is applicable

Rosha Mamita 2H
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Joined: Fri Sep 28, 2018 12:19 am

Re: How do I know what is an Ideal Gas

Postby Rosha Mamita 2H » Sun Feb 10, 2019 9:42 pm

There are many conceptual factors to determining if gases are ideal or not, but for the sake of this course I think we are supposed to see every gas as an ideal gas. Many gases do not behave like ideal gases but we havent considered that in class yet

Mark 1D
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Re: How do I know what is an Ideal Gas

Postby Mark 1D » Sun Mar 10, 2019 7:48 pm

I think we are supposed to assume the gases in the questions are ideal gases. Sometimes the question will state it as well.

Gisselle Sainz 2F
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Joined: Wed Feb 21, 2018 3:00 am

Re: How do I know what is an Ideal Gas

Postby Gisselle Sainz 2F » Sun Mar 10, 2019 8:02 pm

Usually a problem will explicitly mention something as an ideal gas so we most likely won't need to identify it on our own.

Pritish Patil 1K
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Joined: Fri Sep 28, 2018 12:24 am

Re: How do I know what is an Ideal Gas

Postby Pritish Patil 1K » Tue Mar 12, 2019 1:01 pm

Most of the questions we will receive assume that the gas is an ideal gas. It will explicitly tell us.

Noah Fox 1E
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Joined: Fri Sep 28, 2018 12:20 am

Re: How do I know what is an Ideal Gas

Postby Noah Fox 1E » Tue Mar 12, 2019 11:08 pm

Note ideal gases are usually exemplified by noble gases ie helium argon etc. This is because the molecules are singular

Ashley P 4I
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Joined: Wed Nov 15, 2017 3:04 am

Re: How do I know what is an Ideal Gas

Postby Ashley P 4I » Fri Mar 15, 2019 9:48 am

We are supposed to assume the gases in the questions are ideal gases.

Albert Duong 4C
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Re: How do I know what is an Ideal Gas

Postby Albert Duong 4C » Fri Mar 15, 2019 10:07 am

The assumption is that it's an ideal gas, but questions will usually state that it's an ideal gas.

Nghi Nguyen 2L
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Joined: Fri Sep 28, 2018 12:18 am

Re: How do I know what is an Ideal Gas

Postby Nghi Nguyen 2L » Fri Mar 15, 2019 9:37 pm

the questions usually tell you directly to assume ideal behavior

jocelyntzeng
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

Re: How do I know what is an Ideal Gas

Postby jocelyntzeng » Sat Mar 16, 2019 12:44 pm

the question will say that it is an ideal gas


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