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Internal Energy

Q. 3. Calculate the pressure of a gas if it expands from 2.0 L to a final volume of 7.4 L and procedures -32 kJ of work. What does the negative represent? Conceptually, what does the negative symbolize?

Solved • Feb 26, 2020

Internal Energy

Q. 2. A gas expands its volume from 4.7 L to 8.9 L at a constant temperature. Answer the following: a. If the gas expands against vacuum conditions, calculate the work (in joules) done by the gas.

Solved • Feb 26, 2020

Internal Energy

Q. 1. Calculate the initial volume of a gas if it is compressed to a final volume of 1.4 L at a constant pressure of 2.7 atm and results in 457. J of work.

Solved • Feb 26, 2020

Internal Energy

Q. At constant pressure, which of these systems do work on the surroundings? a) 2A (g) + B (g) → C(g) b) A(s) + B(s) → C (g) c) A(g) + B (g) → 3C(g) d) A(g) + B(g) → C(g)

Solved • Mar 2, 2020

Internal Energy

Q. Which of the following represent processes with negative values for ΔE for the process described? (i) burning a piece of coal (ii) compressing a balloon to a smaller volume (iii) freezing water

Solved • Dec 31, 2019

Internal Energy

Q. Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40. cm^3. If the combustion of this mixture releases 950. J of energy, to what volume will the gases expand against a constant pressure of 650. torr if all the energy of combustion is converted into work to push back the piston?

Solved • Dec 27, 2019

Internal Energy

Q. Which of the following will best help determine the direction of heat flow in a system? a) work b) pressure c) temperature d) enthalpy e) internal energy

Solved • Nov 19, 2019