A.) A piston has an external pressure of 5.00 atm. How much workhas been done in joules if the cylinder goes from a volume of 0.170liters to 0.570 liters?

B.) An ideal gaseous reaction (which is a hypothetical gaseousreaction that conforms to the laws governing gas behavior) occursat a constant pressure of 35.0 atm and releases 73.8 kJ of heat.Before the reaction, the volume of the system was 7.00 L . Afterthe reaction, the volume of the system was 3.00 L .

Calculate the total internal energy change, ΔE, inkilojoules.

C.)

An ideal gas (which is is a hypothetical gas that conforms tothe laws governing gas behavior) confined to a container with amassless piston at the top. (Figure 2) A massless wire is attachedto the piston. When an external pressure of 2.00 atm is applied tothe wire, the gas compresses from 4.40 to 2.20 L . When theexternal pressure is increased to 2.50 atm, the gas furthercompresses from 2.20 to 1.76 L .

In a separate experiment with the same initial conditions, apressure of 2.50 atm was applied to the ideal gas, decreasing itsvolume from 4.40 to 1.76 L in one step.

If the final temperature was the same for both processes, whatis the difference between q for the two-step process andq for the one-step process in joules?

D.) A volume of 120. mL of H2O is initially at room temperature(22.00 ∘C). A chilled steel rod at 2.00 ∘C is placed in the water.If the final temperature of the system is 21.40 ∘C , what is themass of the steel bar?

Use the following values:

specific heat of water = 4.18 J/(g⋅∘C)

specific heat of steel = 0.452 J/(g⋅∘C)

E.) The specific heat of water is 4.18 J/(g⋅∘C). Calculate themolar heat capacity of water.