A given mass of air has a volume of 8.00 L at 60.0°C. At constant pressure, the temperature is increased to 80.0°C. Calculate the final volume for the gas.

Answer:
D. 6.00 L
Explanation:
What we have here is an example of Boyle's Law. The equation here is P₁ · V₁ = P₂ · V₂. We know all of the values except for V₂.
60(8) = 80V
Multiply 60 by 8 to get 480.
480 = 80V
Divide both sides by 80.
480/80 = V
6 = V
The final volume for the gas is 6.00 L.