What do you call the number in front of a chemical formula that tells how many atoms or molecules of a substance take part in the reaction? a. coefficient b. yield c. symbol d. subscript

I believe it would be a coefficient :) make sure u study this vocab its like the basis of the other things ur going to be doing - good luck!!!

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.