RESERVOIR ENGINEERING please help

A sample of gas was collected from an undersaturated oil reservoir at 250F and 3500 psia. Table 1 shows the gas sample consists of non-hydrocarbon compositions. From Wichert \& Aziz's chart, the adjustment factor () for H2S and CO2 compositions is 12. a) Determine the gas formation volume factor of the sample at reservoir conditions. (12 marks) b) Calculate the gas viscosity using Lee-Gonzalez-Eakin method. (4 marks) c) Compare the behavior of oil and gas viscosity with changes in pressure. (4 marks)