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Q: How do the coefficients in a balanced equation compare quantites of two substances?

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In a balanced equation, the coefficients show the mole ratio of the different substances. That is, it shows how each substance taking part in the reaction is related on a mole to mole basis.

A balanced chemical equation has correct placed coefficients and a representative chemical equation need these coefficients.

A chemical equation tells you what substances are reacting, what substances are produced and, in a balanced equation, provides the coefficients to tell us in what ratio the substances react or are produced.

What information can you determine from the coefficients in this balanced chemical equation? Mg + 2HCl → MgCl2 + H2

A balanced chemical equation shows how many of what molecules react, how many of what molecules result, and sometimes the state of the substances.

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Type your answer here... The ratio of the substances' coefficients equals the ratio of their number of moles.

In a balanced equation, the coefficients show the mole ratio of the different substances. That is, it shows how each substance taking part in the reaction is related on a mole to mole basis.

A balanced chemical equation has correct placed coefficients and a representative chemical equation need these coefficients.

A balanced chemical equation has correct placed coefficients and a representative chemical equation need these coefficients.

A chemical equation tells you what substances are reacting, what substances are produced and, in a balanced equation, provides the coefficients to tell us in what ratio the substances react or are produced.

What information can you determine from the coefficients in this balanced chemical equation? Mg + 2HCl → MgCl2 + H2

A balanced chemical equation shows how many of what molecules react, how many of what molecules result, and sometimes the state of the substances.

the relative amounts of reactants/products. They can be interpreted as atoms, molecules, or formula units depending on the substances, or they can be called moles of substances. If all substances are gases the coefficients can even represent volumes (liters).

coefficients

They represent the number of molecules in a balanced equation.

yes, but not recommended

I believe it is already balanced. No coefficients neccessary

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