What will be the pressure exerted by a mixture of `3.2 g` of methane and `4.4g` of carbon dixide contained in a `9 dm^(3)` flask at `27^(@)C` ? .

Options

A. 0 . 82 atm
B. `8 314 xx 10^(4)` atm
C. 1 atm
D. 1.8 atm

Answer

A

Explanation

`P=(n)/(V)RT`
n for `CH_(4)=(3.2)/(16)=0.2 , n` for `CO_(2)=(4.4)/(44)=0.1`
`n_("total")=0.2+0.1=0.3`
`P=(0.3xx0.0821xx300)/(9)=0.82` atm