A sample of gas consists of `mu_(1)` moles of monoatomic molecules, `mu_(2)` moles of diatomic molecules and `mu_(3)` moles of linear triatomic molecules. The gas is kept at high temperature. What is the total number of degrees of freedom?

Options

A. `[3mu_(1)+7(mu_(2)+mu_(3))]N_(A)`
B. `[3mu_(1)+7mu_(2)+6mu_(3)]N_(A)`
C. `[7mu_(1)+3(mu_(2)+mu_(3))]N_(A)`
D. `[3mu_(1)+6(mu_(2)+mu_(3))]N_(A)`

Answer

A

Explanation

`[3mu_(1)+7(mu_(2)+mu_(3))]N_(A)`