Final answer:
In chemistry, we multiply the second step in a net equation to balance the equation and eliminate fractional coefficients.
Step-by-step explanation:
In chemistry, we multiply the second step in a net equation in order to balance the equation and eliminate any fractional coefficients. When coefficients are whole numbers, it makes the equation easier to understand and work with. For example, if we have a fractional coefficient of 1.5 for a reactant, we would multiply all coefficients by 2 to get rid of that fractional value and end up with whole numbers.