1.An ideal gas is contained in a tank at 120 atm of pressure and 263K.
(b) Suppose instead that the temperature first rises by 50K and then half the mass of the gas is drawn off. What is the new pressure?
2.In an experiment, a vacuum of 10-10 atm is achieved in a bottle. If the bottle is at room temperature (30°C), what is the number of molecules in the bottle per cubic centimeter?
3.Find the entropy change for
(a) 12 g of ice cooling from -8oC -10oC;
(Heat capacity of ice is 37.6 J/(mol•°C). Latent heat of fusion of ice is 6.0 kJ/mol. Heat capacity of water is 4.18 kJ/(kg•°C). Latent heat of vaporization of water is 2.26 MJ/kg.)