Computing Mass of gas molecule from specific heat

[Saladsamurai]

The mass of a gas molecule can be computed from its specific heat at constant volume $$c_v$$ (note this is NOT $$C_v$$)

Take $$c_v=0.075\frac{cal}{g*C}$$ for argon and calculate (a) the mass of an argon atom and (b) the molar mass of argon.

I just finshed the chapter on Kinetic Theory of gases, but for some reason I am completely jammed on this one.

Can I get a hint to get me going?

Casey

 

[Dick]

You are given a heat capacity per gram. The usual ideal gas statement of heat capacity is per mole. Compare the two to get grams per mole.