What is the total number of mole of atoms in 1 mol of Cu(NO3)2 ?* A. 54x102 mol
B. 9mol
C. 1.5210-23
D. 1.02x 1025 mol

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

What must happen before a body cell can begin mitotic cell division

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride