n the equation 2H2+1O2→→2H2O if you change the 2H2 to 3H2 molecules and balance the equation, identify which statement is correct? (1 point) Responses Each oxygen molecule will combine with 2 hydrogen molecules with no leftover molecules. Each oxygen molecule will combine with 2 hydrogen molecules with no leftover molecules. It is not possible to produce water without leftover molecules. It is not possible to produce water without leftover molecules. The equation will produce three molecules of water. The equation will produce three molecules of water. The result of the equation will be the same.

1 answer

To balance the equation when changing from 2H₂ to 3H₂, let's first write the unbalanced equation:

\[ 3H_2 + O_2 \rightarrow ? \]

To balance the hydrogen atoms, since there are 3 H₂ molecules, there will be 6 hydrogen atoms total. Therefore, to produce water (H₂O), we need 6 hydrogen atoms, which means we would produce 3 molecules of water (H₂O), because each water molecule contains 2 hydrogen atoms:

\[ 3H_2 + O_2 \rightarrow 3H_2O \]

Next, we need to balance the oxygen. In this case, we have one O₂ molecule, which contributes 2 oxygen atoms and matches with the 3 water molecules that also contain 3 oxygen atoms (one for each water molecule).

After rebalancing the whole equation, we would get:

\[ 3H_2 + O_2 \rightarrow 3H_2O \]

The correct statements based on this balanced equation are:

  • Each oxygen molecule will combine with 3 hydrogen molecules to produce 3 molecules of water with no leftover molecules.

Thus, from the given options, the correct statement is: "The equation will produce three molecules of water."

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