Question

2H2g +
02 (g) ______2h2 o(g)
calculate the number of hydrogen
participated in above equation
hydrogen molecule​

Answer 1

Answer:

2H2+O2→2H2O

The Molecular mass of H2=2 g/mol

The Molecular mass of O2=32 g/mol

From  the balanced chemical equation,  

2×2=4 g of hydrogen requires 32 g of Oxygen to react completely

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