Chemical

Which of the following are ways in which energy can be transferred to or from a substance?

• a. heat and internal energy

• b. work and internal energy

• c. heat and work

• d. heat and kinetic energy

What is a set of particles or interacting components that is considered a distinct physical entity called?

• a. an engine

• b. a system

• c. an environment

• d. an ideal gas

How much work is done by 0.020 m³ of gas if its pressure increases by 2.0 x10⁵ Pa and the volume remains constant?

• a. 0 J

• b. -4.0 x 10³ J

• c. 4.0 x10³ J

• d. 1.0 x10⁷ J

Pressure equal to 2.5 x10⁵ Pa is applied to a gas, causing its volume to change by -2.0x10^-3 m³. How much work is done?

• a. 0 J

• b. -5.0x10⁷ J

• c. -450 J

• d. -500

For an isovolumetric process, which of the following statements is correct?

• a. Work, heat, and internal energy all undergo changes.

• b. Work and heat balance each other, so that there is no change in internal energy.

• c. No energy is transferred as heat; internal energy change is due to work.

• d. No work is done; internal energy change is due to heat.

For an isothermal process, which of the following statements is correct?

• a. Work, heat, and internal energy all undergo changes.

• d. No work is done; internal energy change is due to heat.

• c. Work and heat balance each other, so that there is no change in internal energy.

• d. No energy is transferred as heat; internal energy change is due to work.

For an adiabatic process, which of the following statements is correct?

• a. Work, heat, and internal energy all undergo changes.

• b. Work and heat balance each other, so that there is no change in internal energy.

• c. No energy is transferred as heat; internal energy change is due to work.

• d. No work is done; internal energy change is due to heat.

Gas within a piston is compressed from a volume of

1.35x10^-2 m³ to a volume of 12.5x10^-3 m³. What quantity of work is done if the compression occurs under a constant pressure of 4.0x10⁵ Pa?

• 200 J

• -200 J

• 400 J

• -400 J

A gas is enclosed in a container fitted with a piston. The applied pressure is maintained at 599.5 kPa as the piston moves inward,which changes the volume of the gas from 5.317 × 10^−4 m3 to 2.523 × 10^−4 m3. How much work is done?

• 162.5 J

• -165.7 J

• -167.5 J

• 0J

A gas is enclosed in a container fitted with a piston. The applied pressure is maintained at 599.5 kPa as the piston moves inward,which changes the volume of the gas from 5.317 × 10^−4 m3 to 2.523 × 10^−4 m3. The work is done?

• on the gas

• by the gas

• No work is done

• inward the piston