A container contains 31.7g of CO2(g). The partial pressure of CO2 is 2.80 atm and the volume of the container is 32.4L. So what is average or root mean square, speed (in m/s) of the CO2 molecules in the container?

500.0 mL of a buffer solution that is 0.601 M in NH3 and 0.358 M in NH4Cl. 500.0 mL of a solution 0.211 M in HCL is added. The final volume is 1.0000 L the Kb value for NH3 is 1.8 x 10^(-5). What is the pH of the final solution?