Question

Which is the number in front of chemical formulas that represents the ratio of each substance shown in a balanced chemical equation?

a.coefficient
b. covalence number
c. catalyst

Answer 1

The correct answer is option a. "coefficient".

Step-by-step explanation:

In balanced chemical equations, coefficient are written down in front of chemical formulas representing the ratio of each substance. For instance, in the formula of water H2 + O2 → 2 H2O, the "2" represents the coefficient of the substance H2O. If a substance does not have a coefficient written down in front of it, it is assumed that it is equal to "1".

Answer 2

Coefficient is the number in front of chemical formulas that represents the ratio of each substance shown in a balanced chemical equation.