Hint : dont use AI $,$ and in details steps please

$2-$ At a certain point of coal gasification process, a sample of the gas is taken and stored

in a $1-$ L cylinder. An analysis of the mixture yields the following results:

Determine:

a$.$ the mixture composition on a mass basis

b$.$ the average molecular weight of the mixture

c$.$ the mass of the sample in the cylinder at $100$KPa, and $20C$

d$.$ the partial pressure of carbon monoxide