Question

At a temperature of 15 degrees C, a quantity of oxygen has a volume of 250 ml. If it’s temperature is raised to 45 degrees C, what will it’s volume be?

Answer 1

Answer:

280 mL

Explanation:

Ideal gas law:

PV = nRT

Rearranging:

V / T = nR / P

At constant pressure:

V₁ / T₁ = V₂ / T₂

Substituting values:

250 / (15 + 273) = V / (45 + 273)

V = 276

Rounded to two significant figures, the volume will be 280 mL.

When using the ideal gas law, remember to always use absolute units for temperature, like Kelvin.