How can you determine the number of moles of a contained gas when the pressure, volume, and temperature are known values?

Question

Chemistry

Kaya Horton

2 March, 19:43

How can you determine the number of moles of a contained gas when the pressure, volume, and temperature are known values?

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Answers (1)

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Bryson Chapman · Answer 1

Answer: use the ideal gas equation, PV = nRT

Explanation:

The ideal gas equation permits you to determine one variable, P, V, n or T, when you know the other two variables.

In this case, your are told you know P, V and T, so you can solve for n:

n = PV / (RT)

Remember this:

R is the universal constant of gases, and you must use the adequate units.

T is the temperature in absolute scales, i. e Kelvin.