Chemistry Practice Test – Kinetic Theory of Matter and Gas Laws (Questions with Answers and Explanations)

A sample of methane gas occupies 80 cm³ at 27^oC. What is the volume in cm³ at constant pressure when temperature increases to 87^oC? (NECO 2016) 

A. 86
B. 96
C. 106
D. 116

If 60 cm³ of a gas is heated from 27°C to 50°C, what is the new volume of the gas at constant pressure? (WASSCE 2004)

A. 32.4 cm³
B. 55.7 cm³
C. 64.6 cm³
D. 111.1 cm³

A given mass of gas occupies 300 cm³ at 900 mmHg. Calculate the volume occupied by the gas at 750 mmHg if temperature remains constant (NECO 2016) 

A. 300 cm³
B. 360 cm³
C. 450 cm³
D. 520 cm³

A chemist has identified the temperature, volume, and pressure of a sample of an ideal gas. What additional fact about the gas can be determined?

(a) Number of moles of gas in the sample
(b) Molar mass of the gas
(c) Number of atoms per molecule of the gas
(d) None of the above

400 cm³ of gas X diffuses through a porous pot in 2 minutes. Calculate the rate in cm³s^-1 at which X diffuses (NECO 2022) 

A. 3.33
B. 6.30
C. 20.00
D. 25.00