Answer: The mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.
I hope that this helps you !
Answer:
Chemistry is used almost everywhere you go. from the car you use to get to work (gasoline burning) to the nuclear reactors that power many homes ( uranium becoming unstable to product electricity.
Answer:
We mostly use Kilograms and grams to measure mass =)
Explanation:
