Question 1
A sample of a gas occupies 1.40 × 10
3 mL at 25°C and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg?
◦ 2,800 mL
◦ 2,100 mL
◦ 1,400 mL
◦ 1,050 mL
◦ 700 mL
Question 2
A sample of carbon monoxide gas was collected in a 2.0 L flask by displacing water at 28°C and 810 mmHg. Calculate the number of CO molecules in the flask. The vapor pressure of water at 28°C is 28.3 mmHg.
◦ 5.0 × 10
22◦ 5.2 × 10
22◦ 3.8 × 10
23◦ 5.4 × 10
23◦ 3.8 × 10
25