Answer:
volume of the gas is 5.0L
Step-by-step explanation:
Using Boyle's law that state the pressure of a gas is inversely proportional to volume of it occupies when temperature is constant, it is possible to write:
P₁V₁ = P₂V₂
Where P is pressure, V is volume and 1 and 2 are initial and final states.
If initial volume is 2.5L, initial pressure is 2.0atm and 1.0atm is final pressure, final volume is:
2.0atm*2.5L = 1atm V₂
5.0L = V₂
Thus, volume of the gas is 5.0L.