G10 Science: KMT and Boyle's Law

According to Kinetic Molecular Theory, the irregular flow of gas particles resulting in their bumping of the container wall describes which measurable property of a gas?

• pressure

• volume

• temperature

• amount of gas

A sample of methane gas (CH₄) has a mass of 3.2 grams. What is the number of moles of methane in the sample?

(Atomic weights: C = 12.0 amu and H = 1.0 amu)

• 0.10 mol

• 0.20 mol

• 0.40 mol

• 0.80 mol

A scuba diver is exploring the ocean floor at depth of 30 meters. The pressure at this depth is approximately 4 atm. What is the pressure is kPa?

• 228.9 kPa

• 351.6 kPa

• 405.3 kPa

• 566.5 kPa

What is the relationship between the temperature and the kinetic energy of gas particles according to kinetic molecular theory?

• The relationship depends on the type of gas.

• They are inversely proportional; increase in temperature means decrease in kinetic energy of a gas.

• They are directly proportional; increase in the temperature means increase in kinetic energy of a gas.

• There is no relationship; increase or decrease in temperature does not change the kinetic energy of a gas.

Let a, b, and c represent pressure, volume, and temperature of gas respectively; which of the following equations correctly depict the mathematical equation for Boyle's Law.

• a = b/c

• a = c/b

• a = k/b

• a = k/c

The atmospheric pressure measured by a laboratory barometer is 720 mmHg. what is the atmospheric pressure in standard atmospheres?

• 0.90 atm

• 0.95 atm

• 1.00 atm

• 1.05 atm

A sample of oxygen gas has a volume of 225 mL when its pressure is 1.12 atm. What will the volume of the gas be at a pressure of 0.98 atm if the temperature remains constant?

• 104.46 mL

• 163.74 mL

• 213.41 mL

• 257.14 mL

Increase in kinetic energy of gas particles inside a metal container will affect which quantifiable property of gas?

• pressure

• volume

• mass of gas

• amount of gas

How many moles of butyric acid (C₄H₈O₂) are in 54 g of butyric acid?

(Atomic mass: C = 12 amu, H = 1.0 amu, O = 16.0 amu)

• 0.259 mol

• 0.412 mol

• 0.614 mol

• 0.874 mol

What is the nature of Boyle's Law's pressure vs volume (P vs V) graph?

• a circle

• a parabola

• a sloped straight line

• a rectangular hyperbola