The mass of water is equal to the combined mass of hydrogen and oxygen.
This is defined as the quantity of matter in a physical body. The electrolysis reaction of water can be seen below:
2 Hâ‚‚O ---> 2 Hâ‚‚ + Oâ‚‚
We can deduce that 36 grams of Hâ‚‚O dissociated to give 4 grams of Hâ‚‚ and 32 grams of Oâ‚‚ which option D was chosen as the appropriate choice.
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