1 mol=6.022x1023 and Kw = 1.0x10-14. I. Given the following reaction equation C2H4 (g) + O2 (g) CO2 (g) + H2O (g) a) Balance this reaction equation b) Determine the mass of CO2 produced when 35 g of O2 react. II. Solve each of the following problems 1) Convert 465 torr to psi. 2) What mass of CH4 gas occupies 325 mL at STP? 3) The pressure of an NH3 sample is 678 torr at 65 oC. Calculate the new temperature (in oC) when the pressure of the sample is increased to 962 torr, assuming V and n are kept constant.

III. Concentrations. 1) The mass percent of CaCl2 in a solution is 28%. Calculate the mass of CaCl2 in 150. g of this solution. 2) Calculate the volume of a 0.47 M solution of Ca(NO3)2 needed to prepare 75.00 mL of 0.32 M Ca(NO3)2 solution. IV. Acids and Bases 1) Calculate the pH of a solution with [OH-]= 4.6x10-5 M. 2) The PH of a blood sample is 7.35. Calculate its [H+] and [OH-].