When volume and pressures are given, it means we need to use Boyles' law formula--> P1V1 = P2V2
P1= 100 kPa
V1= 5.0 L
P2= 50 kPa
V2= ???
let's plug in the values.
(100 x 5.0) = (50 x V2)
V2= 10 L
A,B,C all have the same molecular and empirical formula. Their formulas can’t be reduced down
C should be the answer to the following formula
