Question

when a fixed mass of gas is compressed at constant temperature, its volume varies
none of the above
directly with pressure
not at all with pressure
inversely with pressure

Explanation:

According to Boyle's Law, for a fixed mass of gas at constant temperature, \(P_1V_1 = P_2V_2\), which can be rewritten as \(V=\frac{k}{P}\) (where \(k = P_1V_1=P_2V_2\) is a constant). This shows that volume \(V\) and pressure \(P\) have an inverse - relationship.

Answer:

Inversely with pressure