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Consider a sample of CaO(s) at 298K and 1 atm. Does the Gibbs energy of the sample increase, decrease of remain the same
The air temperature above coastal areas is profoundly influenced by the large specific heat capacity of water. How large of a volume of air can be cooled
Consider a 2-level system with an energy splitting between the upper and lower level. Using Boltzmann statistics, show that the heat capacity of the 2-level
A piece of glass has a temperature of 85.4C. Liquid that has a temperature of 43.0C is poured over the glass, completely covering it, and the temperature
A 2-kW baseboard electric resistance heater in a vacant room is turned on and kept on for 15 min. The mass of the air in the room is 75 kg, and the room
The specific heat of a gas at a constant pressure is 1.70 times the specific heat at a constant volume. Find the specific heat at a constant pressure.
Spy balloon is to be constructed of a material with a mass of 0.5kg. it will be filled with helium and must be able to carry and instrument payload
A 270g metal block initially at 97°C is put into an 43g aluminum cup containing 195 g of water at 25°C. The specific heat of aluminum is 0.22 cal gl °CI.
Calculate the entropy change for each of the following:
Kyoto box is a simple solar oven used extensively in Africa. Assuming a square box with four reflectors of L = 75 cm, on a sunny day with direct sunlight
Consider a system of two Einstein solids, A and B, each containing 10 oscillators, sharing a total of 20 units of energy.
A 1-cm3 air bubble at a depth of 419 meters and at a temperature of 4 oC rises to the surface of the lake where the temperature is
A steam turbine takes in steam at the rate of 6000 kg hour^-1 and its power output is 800 kW. Neglect any heat loss from the turbine.
The De Broglie wavelengths of visible particles. Why does the wave nature of particles come as such a surprise to most people?
The kinetic molecular theory of gases was developed to explain aspects of gases such as the volume's direct relationship to temperature and inverse relationship
Calculate the average kinetic energy of the N2 molecules in a sample of N2 gas at 273 K and 546 K
According to the kinetic-molecular theory, molecules of different gases at the same temperature always have the same _________
A fixed mass of gas at a constant temperature has a pressure of 50000Pa, and a volume of 3.2m^2. The pressure is changed to 80000Pa
In an experiment, the viscosity of the gas was found to be 2.25 x 10^-4 CGS units. The RMS velocity of the molecules is 4.5 x 10^4 cm/s.
A vessel holding some liquid is placed in a vacuum chamber that is constantly pumped. Gas leaks from the vessel into the vacuum through a small hole
Calculate the molar volume of chlorine gas at 350 K and 2.30 atm using (a) the perfect gas law and (b) the van der Waals equation.
A container is divided into 2 parts by a partition containing a hole of radius r. Helium gas in the two parts is held at temperature T1 = 75K and T2 = 300K
On the sunlit surface of Venus, the atmospheric pressure is 9.0 x 10 6Pa, and the temperature is 740K. On the earth's surface the atmospheric pressure
A storage tank contains 21.4 kg of nitrogen (N2) at an absolute pressure of 3.10 atm. What will the pressure be if the nitrogen is replaced by an equal mass of
A round balloon had a radius of 0.30 m & contains nitrogen (N2) at 30 degrees Celsius and one atmosphere total pressure. What is the volume