A gas bottle contains 0.250 mol of gas at 0.973 bar pressure. If the final pressure is 1.165 bar, how many moles of gas were added to the bottle?

Question

Quizplus · Accepted Answer

Using the ideal gas law, the change in pressure is proportional to the change in moles. The increase in pressure is 1.165 - 0.973 = 0.192 bar. The initial pressure is 0.973 bar for 0.250 mol, so the added moles are (0.192/0.973) * 0.250 mol = 0.0493 mol.

A Gas Bottle Contains 0