1-A gas cylinder contains methane at 1000 psia and 70F. If the cylinder has a volume of 3 cu.ft assuming methane is an ideal gas calculate themass of methane in the cylinder ?

2-Calculate the density of the gas pp in the cylinder in point 1 ?

3-Assuming methane is at the condition of point 1 calculate the volume the gas would occupy at standard conditions?

4-A gas is made up of the following components; 25lb of methane, 3 lb of ethane and 1.5 lb of propane Express the composition of the gas in weight and mole fractions. ?

5-What is the apparent molecular weight of the gas in point 4. ? 6-What is the gas gravity of the gas in point 4 ?

7-Calculate the pseudo critical temperature and pseudocritical pressure of the mixture in point 4.?

8- For the gas of point 4 determine the compressibility factor at a temperature of 150F and a pressure of 3500 psia?

9-Calculate the pseudo critical properties of the gas in point 4 if it also contained 3 lb of hydrogen sulphide, 10lb of carbon dioxide and 2.5lb of nitrogen. ?

10-Express the quantity of 1 lb mole of a gas as standard cubic feet.? 11-Express the mass of gas in point 4 as standard cubic feet. ? 12-Calculate the gas formation factor for a gas with the composition of point 4 existing at the reservoir conditions given in point 8. ? 13-A reservoir exists at a temperature of 150F (as for point 8 ) suitable for storing gas. It has an areal size of 5 miles by 2 miles and is 200ft thick. The average porosity is 20% and there is no water present. How much gas of the composition of point 4 can be stored at a pressure the same as in point 8 i.e. 3500 psia ?

(1 mile= 5280 ft.) 14-Calculate the viscosity of the gas mixture in point 4 at 200F and a pressure of one atmosphere. ? 15-Use the gas gravity method to calculate the viscosity of the gas in point 4. ? 16-Determine the viscosity of the gas in point 4 at 150F and 3500 psia (ref point 4, 7, &8)? 17-Calculate the critical constants for n- heptane.?

18-A PVT cell contains 0.01 cu ft ( 300cc) of gas with at composition of ; methane 0.67 mol.frac, ethane 0.235 and n- butane 0.05. The temperature is increased to 300C. Use the SRK equation to calculate the pressure at this increased temperature. Use binary interaction coefficients of C1-nC4 0.02, C2-nC4 0.01 and C1-C2 0.0 ?