Question

Calculate the formula unit masses of ZnO, Na2O, K2CO3. Given atomic masses of Zn=65u, Na=23u,K=39u,C=12u,and O=16u

Answer 1

Answer:

ZNO=65u+16u=81u

Na2O=23u+23u+16u=62u

K2CO3=39u+39u+12u+16u+16u+16u

=138u

Explanation:

Check their atomic masses..

So that ur doubt be clear...

Thank u

Answer 2

Answer:

ZnO=

65+16=81

Na2O=

(23*2)+16=46+16=62

K2CO3

(39*2)+12+(16*3)=78+12+48=138

*Note-Molecular mass has no unit.