Reference no: EM13651006

1) An unknown gas has a mass of 1.36 kg and occupies a volumeof 0.628 cubic meters at 198 kPa and 35oC. Determine the gasconstant of this gas.

2) A 0.5 cubic meter tank contains oxygen at 150 atm and25oC. If oxygen may be assumed to behave as an ideal gas, howmany kilograms of oxygen are there in the system?

3) A 3 cubic meter tank contains 1.5 kg of a gas at 27oC and avacuum pressure of 81 kPa. What is the density and specificvolume of this gas?

4) A cylinder with a moveable piston contains air (an idealgas) with a pressure of 300 kPa and a volume of 0.5 cubicmeters. The gas is heated and the piston acts against a springsuch that the relationship P=KV is always true. How much workis done by the gas if the final pressure is 750 kPa?

5) A 0.2 cubic meter cylinder contains saturated water andwater vapor at 400oC. If the masses of the liquid and vaporphase are equal, calculate the volume occupied by each.

6) Estimate the temperature to which water at the bottom of a170 M lake would have to be heated before it would begin toboil.

7) Calculate the values of the specific volume and internalenergy of a liquid-vapor mixture of water at 100oC with a qualityof 0.2.

8) Air is kept in a cylinder by means of a piston. Theinitial pressure and volume are 500 kPa and 4 cubic metersrespectively. What is the final pressure if the air is allowedto expand isothermally until the volume is 8 cubic meters?

9) A gas whose molecular weight is 30 is contained in a 100liter tank. The pressure in the tank is 40 kPa. Thetemperature of the gas is 40oC. What is the pressure in thetank if the tank has a loss of 10% of its initial mass due to aleak and the temperature remains unchanged?

10) A tank is 150 mm in diameter and 1.3 M long. Itcontains acetylene at 1700 kPa and 25oC. After some was used,the acetylene was at 1360 kPa and 21oC. What percentage of thecontents of the tank was used?