Question

If 3 moles of gas is given than ratio of cp/cv is
a.3R
b.2R
c.R
d.none of above

Please provide the solution, and I will mark you as brainlist

Answer 1

the ratio of the gas will be cv will be $f/2 r$

∴ Cp/Cv =$(1+2/f)$

that's why option A is correct

Answer 2

From the given question the correct answer is:

If 3 moles of gas is given then the ratio of cp/cv is a. 3R

Explanation:

The ratio of the gas will be cv will be  

∴ Cp/Cv = (1+2/f)

we can also say that,

Cp/Cv = (1 + 2/f),

where, f = degree of freedom.

Monoatomic gas has only one translational motion,

So, three translational degrees of freedom.

Hence, If 3 moles of gas is given then the ratio of cp/cv is a. 3R