1. Calculate the Calories per gram for each food you tested by dividing the Calorie value by the mass of the food. How do these values compare to the Calories per gram shown
on the nutrition label for each food?

Don’t know. don’t care.look it up on google

Bromine has atomic number  35  which means there are  35 protons  and  44  neutrons to give a total of 79 nucleons. the fact that it's a positive ion means that it has lost an electron; so there'll be  34 electrons.