Answer:
1520 torr = 1520mmHg = 2 atm.
Explanation:
Please note that it is just basic conversion.
1 torr = 1mmHg
1 atm = 760mmHg = 760 torr
As per the question,
FIRST PHASE:
760 torr pressure is applied which gave = 60mL volume to gas.
SECOND PHASE:
760mmHg pressure is applied which gave = 30mL volume to gas
Since we know that 1mmHg = 1 torr.
Therefore, total gas pressure = 760 + 760 = 1520 torr OR 1520mmHg