Final answer:
The new volume of the gas is 13.3 cm3 when the pressure is increased to 3 atm.
Step-by-step explanation:
According to Boyle's Law, the volume of a gas is inversely proportional to its pressure, provided that the temperature and amount of gas remain constant. To find the new volume, we can use the formula:
V1 x P1 = V2 x P2
Substituting the given values, we have 40.0 cm3 x 1 atm = V2 x 3 atm. Solving for V2, we find that the new volume is 13.3 cm3.