using charles’ law, you would use the formula:
V1/T1=V2/T2
when assigning variables:
T1= 285K
V1= .315L
T2=311K
V2= ?
to find V2, plug in the variables into the equation
.315/285=311/V2
cross multiply V1 and T2: .315(311)=97.965
then divide by 285
97.965/285= .343L
so your answer is .343L :)