Question

A fixed quantity of gas is collected in a graduated tube over the mercury. The volume of the gas at ${20}^{0}C$ is 50.0mL and the level of the mercury in the tube is 100 mm above the outside mercury level. The barometer reads 750 mm. Volume at STP is:

• A. 39.8 mL
• B. 40 mL
• C. 42 mL
• D. 52.1 mL

Answer 1

The correct option is A 39.8 mL