Use the balanced equation: ZnS+ 2HCl → ZnCl₂ + H₂S ; Calculate the grams of H₂S produced, if 777ml of a 0.500M solution of HCl reacts with ZnS. 6.63g
4.11g
9.77g
13.3g

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Answer is: value of q is 5·10⁻⁶m.chemical reaction: mg²⁺(aq) + co₃²⁻(aq) → mgco₃(s).c(mg²⁺) = 2.5·10⁻³ m; concentration of magnesium cations.c(co₃²⁻) = 2.00·10⁻³ m; concentration of carbonate anions.q = c(mg²⁺)  · c(co₃²⁻).q = 2.5·10⁻³ m  · 2.00·10⁻³ m.q = 5·10⁻⁶m.q = 0.000005 m.

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