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In the decomposing of water why is twice as much hydrogen as oxygen formed?

A. hydrogen gas has two atoms, and oxygen gas has one atom
B. some oxygen gas escapes the reaction and the hydrogen is conserved
C. hydrogen atoms are twice the size of oxygen atoms
D. there are two atoms of hydrogen and one atom of oxygen in a water molecule.

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Answer:

The correct answer is D. There are two atoms of hydrogen and one atom of oxygen in a water molecule. Therefore, during the process of decomposing water, twice as much hydrogen gas is formed compared to oxygen gas because each water molecule contains two hydrogen atoms and only one oxygen atom.

User Clay Bridges
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