_________ which one of the following salts is insoluble? NH_aCl Ca(NO_3)_2 NaCO_

Question

_________ which one of the following salts is insoluble? NH_aCl Ca(NO_3)_2 NaCO_3 Na_2S zn(CH_3COO)_2 _________ Complete the following statement: In Charles' law, the volume of a gas _____ when the _____ decreases increases, temperature increases, quantity of gas increases, pressure decreases, temperature decreases, pressure _______ The total pressure in a mixture of gases is equal to the partial pressure(s) of the gas with the greatest number of moles. the gas with the smallest number of moles. the gas with the highest molecular weight. the gas that occupies the largest volume. all the gases added together. _______ What is the largest component of air? oxygen ozone carbon dioxide nitrogen _______ Which of the following solutions will be the best conductor of electrical current? methyl alcohol, CH_3OH(aq) glucose, C_6H_12O_6(aq) potassium chloride, KCI(aq) bromine, Br_2(aq) _______ Select the spectator ions for the following reaction. pb(NO_3)_2 (aq) + 2NaCl(aq) rightarrow PbCl_2(s) + 2 NaNO_3(aq) Pb^2+ (aq), CI^-(aq) Na^+ (aq), NO_3^- (aq) Pb^2+ (aq), NO_3^- (aq) Na^+ (aq), CI^-(aq)

Explanation / Answer

(7)

(8)

(D) volume of gas decreases with decrease in temperature, keeping pressure constant

(9)

All the gases added together

(11)

KCl is the best conductor because it dissociates to give ions in solution

(12)

(B) Na+ and NO3-, because these ions are present on both the sides of the reaction

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