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2 H2 + O2 -> 2 H20
if 32 grams of oxygen reacts with sufficient hydrogen to make 36 grams of water, how many grams of hydrogen will be needed?


Sagot :

Answer:

8

Explanation:

since both hydrogen and water has the same numbers of mole. then as we know that mole = mass/molar mass, 2=mass/2 therefore mass= 4g