The molar mass (M) of oxygen is 0.0320 kg/mol.
(a) What is the average speed of oxygen gas molecules at T = 176 ºF?
(b) What is the root-mean-square speed at T=225 ºF

Ten moles of a monatomic ideal gas with an RMS speed of 300 m/s are confined in a tank that has a volume of 0.3 m³. If the molar mass of the gas is 0.1 kg/mol, find the pressure of the gas

The RMS speed of the molecules of a gas increases from 400 m/s to 490 m/s if the temperature of the gas is increased by 103K. Determine the molar mass of the gas in g/mol.

One mole of a diatomic ideal gas is cooled from 200 ºC to 50 ºC. Determine:  
(a) The change in the translational kinetic energy        
(b) The change in the internal energy of the gas

A bubble of 5 moles of Helium is submerged at a certain depth in liquid water when the water (and thus the Helium) undergoes a temperature increase of 20 ºC at constant pressure. As a result, the bubble expands. The helium is diatomic, ideal and at constant pressure.
(a) How much energy is added to the helium as heat during the increase and expansion? (Q=?)
(b) How much work (W) is done by the Helium as it expands against the pressure of the surrounding water during temp increase?

Calculate the change in entropy when 12 g of water at -10ºC is raised to 100ºC and convert to steam at 100 ºC. Assume that specific heat of water = 4190 J/kg.K, heat of vaporization = 2256 kJ/kg, specific heat of ice = 2220 J/kg.K, heat of fusion = 334 kJ/kg.

Two moles of a monatomic ideal gas (ɣ = 1.67) initially at pressure p1, volume V1, temperature T1 undergoes an isobaric process to volume V2 = 2*V1. The gas is expanded adiabatically to V3 = 3*V1. Determine final temperature of gas T3 if T1 = 298 K, and sketch the diagram for these 2 processes.

One mole of an ideal gas is first compressed isothermally at 380 K to half of its initial volume. Then 450 J of heat is added to it at constant volume. So, what is the net work and total change in internal energy after 2 processes?

You mix two samples of water. Sample A is 200 g at 20ºC. Sample B is 100g at 95ºC. Calculate the total change in entropy of the process. Assume that specific heat of water is 4190 J/kg.K
(Hint: sum of the change of entropy of both samples)

Making a glass of Brown Sugar Bubble Milk uses 1/4 L of 85 °C water before cooling it down to room temperature at 27  °C.
a) Calculate the entropy change of the milk while it cools, the specific heat of water is 4.18 J/.K.
b) Calculate the change in entropy of the air while the milk cools, if all the heat lost by the water goes into the air, and the cooling process is virtually isothermal for the air.
c) What is the total entropy change of the system (milk + air)?