The specific heat of oxygen gas at constant volume is `0.155 cal cdot g^(-1) cdot^(@)C^(-1)`. What is its specific heat at constant pressure? Given, the molecular mass of oxygen = 32 and `R = 2 cal cdot mol^(-1) cdot^(@)C^(-1)`.

Explanation

Molar specific heats of oxygen gas at constant volume and constant pressure respectively, are
`C_(v) = Mc_(v) and C_(p) = Mc_(p)`
Now, `C_(p) - C_(v) = R or, C_(p) = C_(v) + R or, Mc_(p) = Mc_(v) + R`
or, `c_(p) = c_(v) + R/M = 0.155 + 2/32 = 0.2175 cal cdot g^(-1) cdot^(@)C^(-1)`.