Question

what will be the pressure exerted by the mixture of 3.2g of methane and 4.4g of CO2 contained in a 9 dm3 flask at 270C.[R=0.0831 bar dm3/k/mol]

Answer 1

No. of moles of CH4
$= \frac{3.2}{16} = 0.2$
No. of moles of CO2
$= \frac{4.4}{44} = 0.1$
Total no. of moles of mixture
$= 0.2 + 0.1 = 0.3$
Using Ideal gas equation
PV = nRT
P = nRT/V
P = 0.3×0.0831×300/9
P = 0.831 bar