Calculate the mass of the salt obtained by the reaction of 13 g of Zn hydrochloric acid

Zn + 2HCl = ZnCl2 + H2.
Zinc reacted in an amount of 13 g: 65 g / mol = 0.2 mol, zinc chloride was the same amount. The salt mass is 136 g / mol * 0.2 mol = 27.2 g.

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