Internal combustion of gasoline produces toxic CO gas. It can be converted to less harmful CO2 gas with the following two-step reaction. For each 589 g of NO2, how many moles of CO2 will be produced? 2NO2 (g) → NO (g) + NO3 (g)
NO3 (g) + CO (g) → NO2 (g) + CO2 (g)

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.