Answer
Calculating the mass number for an atom requires that we know the atomic number and the number of protons in the atom’s nucleus. The mass number then gives us the average weight of atoms of a given element. However, as long as the number of protons equals the number of neutrons, the values balance out and we always obtain a whole number for the mass number.
Explanation:
those 3
Answer:
We can't see the options so we don't know what we can put
Explanation:
Answer:
sun
Explanation:
because all plants use energy from the sun to make food and grow
Answer: HCl+NaHCO₃=NaCl+CO₂+H₂O
Explanation:
