1. 1-One mole of ideal gas at 270C
1-One mole of ideal gas at 270C. is expanded isothermally from a volume of 2.28 L to L.CalculateW,∆E,∆H,q.
2-Calculat worke when 16 g of O2 at 300K is compressed from
1 atm to 100 atm(assume the work was reversibly).

2. 3-When gas at K ,3 atm is expanded adiabatically and reversibly from 1.43 L to L.Assuming Cp=28.8 J K -1 mol-1
A-What is the final temperature,pressure of the gas
B-Calculate W,∆E, ∆H,q.
4-Calculate Cv, Cp.Assume gas are ideal if a=44.23 J K -1 mol-, b=8.79×10-3 J K -1 mol-,C=-8.6×105 J K -1 mol-,γ=1.31 at 273K

3. 5- when 1 mole of liquid benzen is heated until evaporation is reversibly at 80.20C.the vapor is expands a gainst external pressure1 atm.Calculate W,∆E, ∆H,q
6-If the work done when the gas pressure in the cylinder 299 J in the process moved the amount of heat of 70.3 J from the gas to the surroundings, What is the change in internal energy of the system?