Question

Calculate the formula unit of masses Z and n a 2 c o 3 given atomic masses of Z and equals to 65 u n a = 223 u k = 239 u c = 212 u and equals to 16 u

Answer 1

Na2CO3

Na = 23

C =12

O = 16

So formula mass is

23x2 + 12 + 16x3

46 + 12 + 48

106 u mass of Na2CO3