Chemistry, 25.05.2020 20:58 vickygloom

A U. S. penny, which is composed of copper-plat zinc (97.5% Zn, 2.5% Cu), has a mass of 2.500g. Hydrochloric acid (HCl) does not react with copper by it does react with zinc. How many grams of H2 are formed by reacting the zinc in the penny with excess HCl? Zn(s) + 2HCl(aq) -> ZnCl2(aq) + H2(g)

a
0.0301g
b
0.0772g
c
0.151g
d
0.0753g

Answers: 1

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A U. S. penny, which is composed of copper-plat zinc (97.5% Zn, 2.5% Cu), has a mass of 2.500g. Hydr...