Which one of the following compounds is a nonelectrolyte when dissolved in water? a. HCl b. CaCl_2 c. C_2H_12_O_6 d. Cu(NO_3)_2 e) NaC_2H_3O_2 Which of the following compounds is a weak acid? a. HCl b. H_3PO_4 c. HNO_3 d. HClO_4 e. H_2SO_4 Which of the following compounds is a weak base? a. NaOH b. H_2CO_3 c. LiCl d. NH_3 e. HC_2H_3O_2 If 4.49 g NaNO_3 is dissolved in enough water to make 250.0 mL of solution, what is the molarity of the sodium nitrate solution? a. 1.80 times 10^-2 M b. 5.28 times 10^-2 M c. 2.11 times 10^-1 M d. 1.32 times 10^-2 M d. 18.0 M How many liters of 0.1107 M KCl(aq) contain 2.50 g of KCl? a. 0.277 L b. 0.303 L c. 3.71 times 10^-3 L d. 3.30 L e. 5.94 times 10^-4 L