A container has a volume of #3 L# and holds #2 mol# of gas. If the container is expanded such that its new volume is #8 L#, how many moles of gas must be injected into the container to maintain a constant temperature and pressure?
2 Answers
The number of moles to be injected is
Explanation:
Apply Avogadro's Law
At constant temperature and pressure
The initial volume is
The initial number of moles is
The final volume is
The final number of moles is
The number of moles to be injected is
Explanation:
Assume the gas is ideal
Let
Now, from ideal gas equation,
Let
Now, from ideal gas equation,
Dividing (2) by (1) as follows
Thus,