What is the total number of moles represented by 20 grams of caco3

a. 0.1
b. 0.2
c. 1
d. 2

Acertain atom has 22 protons and 19 electrons. this atom loses an electron. the net charge on the atom is now 4+1+01-4-. if this same atom with 22 protons and 19 electrons were to gain 3 electrons, the net charge on the atom would be 3+2+02-3-.