Question

types of reactions quick check
in the decomposition of water, why is twice as much hydrogen as oxygen formed? (1 point)
some oxygen gas escapes the reaction, and hydrogen gas is conserved.
there are two atoms of hydrogen and one atom of oxygen in a water molecule.
hydrogen atoms are twice the size of oxygen atoms.
hydrogen gas has two atoms, and oxygen gas has one atom.

Explanation:

The chemical formula of water is H₂O, which means there are two hydrogen atoms and one oxygen atom in each water molecule. During decomposition, the atoms in water molecules are rearranged. Based on the ratio of hydrogen to oxygen atoms in water, twice as many hydrogen - containing products are formed compared to oxygen - containing products.

Answer:

There are two atoms of hydrogen and one atom of oxygen in a water molecule.