Please answer correctly and fully, by 11:30 pm tonight. Really need help!!

Be sure to answer all parts. Nitric oxide (NO) reacts with molecular oxygen as follows: 2NO(g)+O2(g)2NO2(g) Initially NO and O2 are separated in two different chambers connected by a valve. When the valve is opened, the reaction quickly goes to completion. Determine what gases remain at the end and calculate their partial pressures. Assume that the temperature remains constant at 25C. Initial conditions are as follows: NO: 3.93 L, 0.500atm O2:1.99L,1.00atm PNO= atm PO2= atm PNO2= atm