15. why are the coefficients important in a balanced chemical equation- other than the fact that they are used to balance the equation? what else are they used for? (3 points total) *

The coefficients in a balanced chemical equation are important because they give the ratio of the reactants and the products.

Those ratios are fixed and when the reagents react do it in the same proportion and yield the products  in the same proportion of the coefficients.

Then, the coefficients are the basis for the calculations of  the amount of substances that react and the amount of substances that are formed as result of the reaction.

Ido not understand. 

You would be correct, boiling water does disinfect contamination.    the property of disinfecting means to kill  germs, bacteria and other pathogens or contamination  that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate.  the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.