Question

2H2 + O2 → 2H2O

How many grams of water can be made from 2.0 moles of oxygen gas?

Answer 1

Answer:

72 gm (4 mole) of water can be made from 2.0 moles of oxygen gas

Answer 2

Answer:

1 mole of oxygen molecule contain 32gm of oxygen

so, 2 mole of oxygen contain 64 gm of oxygen

1 mole of hydrogen molecule contain

4gm

2 mole of hydrogen molecule contain 8gm

so, total gram of water will be 64+8

=72gm

I hope it helped you out dear