If a gas sample has a volume of 5 L at STP what would be its volume at 45C

Explanation:

Data:

p₁ = 1 bar;  V₁ = 5 L;  T₁ =   0 °C

p₂ = 1 bar; V₂ = ?;     T₂ = 45 °C

The pressure and the number of moles are constant, so, to calculate the volume, we can use Charles' Law.

Calculations:

(a) Convert temperatures to kelvins

T₁ =   (0 + 273.15) K = 273.15 K

T₂ = (45 + 273.15) K = 318.15 K

(b) Calculate the new volume

most likely he is cheating on you