Emily D.

asked • 06/04/21

question for chemistry

Mg + 2 HNO3 ---> Mg(NO3)2 + H2


If I start this reaction with 40.0 grams of magnesium and an excess of nitric acid (HNO3), how many grams of hydrogen gas will I produce?

 

A) 3.3g H2

B) 4.5 g H2

C) 7.8 g H2

D)1.2 g H2

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