Question

A sample of gas has a mass of 0.565 g. Its volume is 117 mL at a temperature of 95 C and a pressure of 749 mm Hg. How would you find the molar mass of the gas?

Answer 1

`"Molar mass"` `~=` `150*g*mol^-1`.

Explanation:

From the Ideal Gas equation, `n=(PV)/(RT)`, where, `n="Mass"/"Molar mass"`.

And thus `"Molar mass "=("Mass"xxRT)/(PV)`

`=(0.565*gxx0.0821*L*atm*K^-1*mol^-1xx368*K)/((749*mm*Hg)/(760*mm*Hg*atm^-1)xx0.117*L)=???g*mol^-1`