A gas has a volume of 800 mL at a temperature of - 55.0 celsius what volume with the gas occupy at 25.0 celsius? show your work

We can use Charle's law for this question.

Charle's law says "at a constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature".

V α T

Where V is the volume and T is the temperature in Kelvin of the gas.

For two different situations, the following formula can be used.

V₁/T₁ = V₂/T₂

According to the given data,

V₁ = 800 mL

T₁ = - 55.0 ⁰C = 218 K

V₂ = ?

T₂ = 25.0 ⁰C = 298 K

From substitution,

800 mL / 218 K = V₂ / 298 K

V₂ = (800 mL / 218 K) x 298 K

V₂ = 1093.58 mL

Hence, the volume of the gas at 25.0 ⁰C is 1093.58 mL.