When 30.0 moles of zinc reacts with excess #H_3PO_4#, how many grams of hydrogen are produced?

1 Answer
Dec 4, 2016

Answer:

#30# #"g"#

Explanation:

#3"Zn" + 2"H"_3"PO"_4 -> "Zn"_3("PO"_4)_2 + 3"H"_2#

The molar ratio of zinc: hydrogen is #3:3# so moles of zinc = moles of hydrogen.

#"m"="nM"=30xx1=30# #"g"#