1. For a sample of stomach acid that is 1.80×10-2 M in HCl, how many moles of HCl are in 17.3 mL of the stomach acid?
2. To what volume should you dilute 75 mL of a 12.0 M H2SO4 solution to obtain a 1.60 M H2SO4 solution?
3. K2S(aq)+Co(NO3)2(aq)→ 2KNO3(aq)+CoS(s) What volume of 0.225 M K2S solution is required to completely react with 195 mL of 0.130 M Co(NO3)2?