Answer:
The pressure when the gas occupies 3.5L is 28atm
Step-by-step explanation:
Based on Boyle's law, the pressure of a gas is inversely proportional to its volume under constant temperature. That means if the pressure of a gas is increased, the volume decrease and vice versa. The formula is:
P₁V₁ = P₂V₂
Where P is pressure and V is volume of 1, initial state and 2, final states
In the problem, the initial state of the gas is 14L and 7.0atm and the final state occupies a volume of 3.5L.
Replacing in Boyle's law formula:
7.0atm*14L = P₂3.5L
28atm = P₂
The pressure when the gas occupies 3.5L is 28atm