Physics
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What is the specific heat of oxygen (O2; M = 32.00 g/mol) at constant volume? How does it compare with specific heat for liquid water? Hint: Cv = 20.85 J/mol•K.
2.50 mol of an ideal monoatomic gas is placed in a constant volume container. How much heat should be supplied to raise the temperature of the gas by 44 K at temperatures close to room temperature?
Calculate the heat absorbed by 1.4 moles of an ideal diatomic gas to increase its temperature by 38 K if it is placed in a constant volume container. Assume the process occurs at temperatures near room temperature.
Suppose a region of space has interstellar monoatomic gas (helium atoms only; fictitious though) at a density of 1 atom in every 1000 mm3 and T = 2K. Find the radius, R of a spherical volume of the gas that has 5.0 J of heat energy.
A 0.32 mol gas sample has its thermal energy as a function of temperature plotted as shown below. Find the heat capacity of the gas at constant volume.
3.2 moles of helium gas with an initial thermal energy of 1750 J is brought to contact (through a conducting boundary) with 2.2 moles of Argon with an initial thermal energy of 12100 J. State the gas with a greater initial temperature.
A mysterious diatomic gas has a strong covalent bond that requires high temperatures to experience vibrational modes. The vibration modes are experienced at temperatures greater than or equal to 1000 K. Suppose the gas enters a combustion chamber of an Otto cycle engine that reaches ignition temperatures of 2400 K; find the theoretical ratio of specific heats of the mysterious gas at 2400 K.
A refrigerator takes out 2.5 J of heat energy from a 4.0 mol of an element. Calculate the decrease in temperature of the element if it is i) Neon, ii) Oxygen, iii) A solid element
A sample of monoatomic gas Y has a volume of 800 mm3, P = 3.0 atm, and T = 150℃. A different sample contains neon at V = 1750 mm3, P = 5.0 atm, and T = 250℃. The two samples are allowed to interact thermally through a boundary. Calculate the thermal energy of each sample when thermal equilibrium is attained.
A container is filled with 2.4 × 1019 molecules of a gaseous substance. The heat energy of the gas in the container is 0.80 J. If Cp of the gas is 29.1 J/mol•K, determine the temperature of the gas.
3.2 g of neon at T = 20℃ comes into contact (through a conducting boundary) with 4.2 g of nitrogen at T = 320℃. Calculate the amount of heat that flows between the gases to establish thermal equilibrium and state the direction of flow.
A hypothetical gas with 4 atoms bonded in a T-shape has a high bond energy that requires temperatures greater or equal to 1200K to activate vibrational modes. The hypothetical gas has rotational kinetic energy in a 3D coordinate system at all temperatures. Calculate the thermal energy of a sample of the gas with n = 6.2 mol, at T = 350 °C.
2.50 g of nitrogen moves at an rms speed of 1150 m/s. The gas expands, doing 925 J of work to the surroundings, and absorbs 650. J of heat from the surrounding. Calculate the rms speed of the nitrogen molecules after this process.