Answer:
[tex]161.9gZn[/tex]
Explanation:
Hello there!
In this case, according the given balanced chemical reaction:
[tex]Zn + 2HCl\rightarrow H_2 + ZnCl_2[/tex]
It is possible to evidence the 1:1 mole ratio of hydrogen (molar mass = 2.02 g/mol) to zinc (atomic mass = 65.41 g/mol) which is used to calculate the grams of the latter needed for the production of 5 grams of the former via stoichiometry:
[tex]5gH_2*\frac{1molH_2}{2.02gH_2}*\frac{1molZn}{1molH_2} *\frac{65.41gZn}{1molZn}\\\\=161.9gZn[/tex]
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