​ If for a gas R/Cv = 0.67, this gas is made up of molecules which are (a) monoatomic (b) diatomic (c) Polyatomic ​

Question

If for a gas \(\frac{R}{C_V}\) = 0.67, this gas is made up of molecules which are

(a) monoatomic

(b) diatomic

(c) Polyatomic

(d) mixture of diatomic and polyatomic molecules

Answer 1

(a) monoatomic

For a gas, we know \(\frac{R}{C_V}\)= γ – 1

or, 0.67 = γ – 1, or γ = 1.67

Hence the gas is monoatomic.