Question

2H2(g) + o2(g) ---------> 2H20(1) calculate the number of hydrogen molecules​

Answer 1

Answer:

two molecules of hydrogen.

Explanation:

it is because H2 is one molecule and there are 2H2 in the above reaction so two molecules.

Answer 2

Answer:

2H2(g)+O2 contains 4 Hydrogen molecules..

2H2O1 also contain 4 hydrogen molecules..

Explanation:

number of molecules of hydrogen

=2(atomic mass of H*2)

=2(1*2)

=4

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