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Multiply H20, the formula with an odd number of oxygen atoms, by the smallest number which will make an even number of oxygen atoms

User FMontano
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Answer: The number is 2.

Step-by-step explanation: The molecular formula of water is
H_2O. It contains two atoms of hydrogen and one atom of oxygen.

Thus there is an odd number of oxygen atom. To make the atoms even , with the smallest number, we multiply the formula by 2. The number of oxygen atoms in 2
H_2O will be 2 , which is an even number.

User GaRos
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