Question

A gas has a volume of 525 mL at 625 Torr. What would be the new volume if the pressure was change to 1.5 atm?

Answer 1

Here, we use Boyle's law: at constant temperature, pressure is inversely proportional to volume.

Explanation:

`P prop 1/V` OR `PV = k`

So `P_1V_1 = P_2V_2` (how did I get this formula from the former?)

So `V_2 =(P_1V_1)/P_1` `=` `??`

`625` `cancel(mmHg) xx 525 mL` `xx` `1/(1520*cancel(mmHg))` `=` `?? mL`

Here I am perfectly free to use non-standard units of pressure and volume; Robert Boyle (possibly) used inches of mercury.