For an ideal monatomic gas, the molar specific heat at constant volume,(adsbygoogle = window.adsbygoogle || []).push({});

C_{v}=3/2R, where R is the gas constant. The heat capacity at constant volume of a gas is measured to be 43.58kJK^{-1}. How many kg-moles of the gas are present?

Iv tried looking in the lecture notes and in the textbook, but cant find anything of use.

Iv made an attempt and got 3.5kg-moles. Not sure that its right though. I used R=kN_{A}, where k is Boltzmann constant and N_{A}is Avogadros number.

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Helpp with thermodynamics and specific heat question!

**Physics Forums | Science Articles, Homework Help, Discussion**