Help with 2 questions related to gasses

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In summary, the problem involves determining the number of moles of N2 in a flask containing He, N2, and Ne at a given temperature and pressure. The second question asks for the density of a gas with a specific molar mass at a given temperature and pressure. The individual is struggling with finding the correct answer and is asking for someone to show them the correct solution.
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link107
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Homework Statement



1.) A 500ml flask at 27 degrees Celsius contains He,N2 and Ne the total Pressure is 0.76atm, while Phe= 0.18 atm and Pne= 0.28 atm. Determine the no of moles of N2 in Flask.

2.) Determine the density (g/l) of a gas with a molar mass of 16.0 g/mol at a temperature of 80 degrees Celsius and a pressure of 1.5atm.


I thank you guys for the help, please do show your work I really appreciate it.


Homework Equations





The Attempt at a Solution



I can't seem to figure out what I am doing wrong in these questions I keep getting the wrong answer every time I check my answer it appears to be wrong. Can someone please show me how it's done with the solution so I can see where my mistake was?
 
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  • #2
Link, you have it backwards.

Show us YOUR work... or else.
 

FAQ: Help with 2 questions related to gasses

What is the difference between gases and liquids?

Gases and liquids are both considered fluids, but they have different physical properties. Gases have no definite shape or volume, and can expand to fill the space they are in. Liquids, on the other hand, have a definite volume but no definite shape, and can only expand to fill the container they are in.

How are gases affected by changes in temperature and pressure?

According to the ideal gas law, the volume of a gas is directly proportional to its temperature and inversely proportional to its pressure. This means that as temperature increases, the volume of a gas will also increase, and as pressure increases, the volume of a gas will decrease.

What is the relationship between gas volume and the number of moles?

According to Avogadro's Law, at a constant temperature and pressure, the volume of a gas is directly proportional to the number of moles of gas present. This means that as the number of moles of gas increases, the volume will also increase.

How does the kinetic molecular theory explain the behavior of gases?

The kinetic molecular theory states that gases are made up of particles that are constantly moving and colliding with each other and the walls of their container. These collisions create pressure and cause the gas particles to spread out and fill the available space.

What is the role of gases in the Earth's atmosphere?

Gases play a crucial role in the Earth's atmosphere. They help regulate temperature by trapping heat from the sun, and they also provide the oxygen needed for life to exist. Gases such as carbon dioxide and methane also contribute to the greenhouse effect, which helps maintain a habitable temperature on Earth.

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