The products of a chemical reaction are chemically different substances than the reactants of a chemical reaction. True or false?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

What is the standard unit of measure for acceleration?

When the ionic compound nabr dissolves in water, br– ions are pulled into solution by the attraction between what two particles? a. the na+ and br– ions b. the na+ ion and the negative end of a water molecule c. the br– ion and the positive end of a water molecule d. the br– ion and the negative end of a water molecule