Calculate the pH of the 1L buffer composed of 500 mL of 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of HCl is added (Ka HC2H3O2 = 1.75 x 10-5).  Calculate the pH of the 1L buffer composed of 500 mL 0.60 M acetic acid plus 500 mL of 0.60 M sodium acetate, after 0.010 mol of NaOH is added (Ka HC2H3O2 = 1.75 x 10-5). Report your answer to the hundredths place.

1. Water Quality Analysis - A public utility announces the monthly average concentrations of several ionic species in the drinking water. The list is given below (atomic weights are given in parentheses): Calcium (40) = 8.6 mg/L Magnesium (24)=0.77 mg/L Potassium (39) = 0.64 mg/L Sodium (23) = 3.7 mg/L a) What is the ratio of [HCO3]/[CO3²] in this water Chloride (35.5) -3.0 mg/L Fluoride (19)- 0.84 mg/L Sulfate (S-32; O=16)= 3.4 mg/L pH=8.46

The composition of a gas on a dry basis is 70.0 mol% N2,70.0 mol% N2, 13.0% O2,13.0% O2, 12.0% CO2,12.0% CO2, and 5.0% CO.5.0% CO. If the mole fraction of water is 0.110,0.110, what is the gas composition on a wet basis ?

using the chart, what is the mole fraction of water in a system at 25 C and 50% relative humidity?