Hikers climbing Mount Everest discovered it took much longer to cook a boiled egg than it does at sea level, because the boiling water is not as hot. What will be the temperature of boiling water (in °C) at an atmospheric pressure of 455 torr? (The AHvap of water is 40.7 kJ/mol).

An automobile weighing 2500 lb is traveling at 55 miles per hours when the brakes are suddenly applied brining the vehicle to a stop. After the brakes have cooled to the ambient temperature, how much heat (in kJ) has been transferred from the brakes to the surrounding? Given Information: 1 Btu = 1055) 778 ft. lbf, 1 mile = 5280 ft, and 32.2 ft. Ibm = s². lbf.

A 1.5 mole sample of an ideal gas at 28.5 °C expands isothermally from an initial volume of22.5 L to a final volume of 75.5 L. Calculate w, g, AU and AH for this process (a) forexpansion against a constant external pressure of 0.498 × 105 Pa and (b) for a reversibleexpansion.

Suppose 1.000 mol argon (assumed to be an ideal gas) is confined in a strong, rigid container of volume 22.41 L at 273.15 K. The system is heated until 3.000 kJ (3000 J) of heat has been added. The molar heat capacity of the gas does not change during the heating and equals 12.47 J K-1 mol-1. (a) Calculate the original pressure inside the vessel (in atmospheres). (b) Determine q for the system during the heating process. (c) Determine w for the system during the heating process. (d) Compute the temperature of the gas after the heating, in degrees Celsius. Assume the container has zero heat сараcity. (e) Compute the pressure (in atmospheres) inside the ves- sel after the heating. (f) Compute AU of the gas during the heating process. (g) Compute AH of the gas during the heating process. (h) The correct answer to part (g) exceeds 3.000 kJ. The increase in enthalpy (which at one time was mislead- ingly called the “heat content") in this system exceeds the amount of heat actually added. Why…