Answer:

Explanation:
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In this case, for the reaction by which water is decomposed to molecular hydrogen and oxygen:

It is necessary to perform the inspection balance process since there is a dissimilar number of atoms of oxygen on both sides; therefore, by putting a 2 on water we balance oxygen:

But now, there are four hydrogens on the left; therefore, we put a 2 on hydrogen to finally balance it:

And obviously, the coefficient in oxygen is an unwritten 1.
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Petroleum is used as a fuel to power vehicles and machines.
Petroleum products include fuel oils for heating and electricity generation.
It is a feedstocks for making the chemicals and plastics.
We use petroleum to produce electricity.
Explanation:
what are the unit given for the questions
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We have to have maple syrup.
Pancakes are a necessity...
a. The reactants are H2 and O2
b. The product is H2O
c. Yes, the reaction balanced because the number of atoms of each element is the same. It can be seen from coefficient and index on the compound