Question

pls pls pls pls pls pls pls ...​

Answer 1

Answer:

1. 81
2. 62
3. 138

Explanation:

just putting the values we get the formula unit mass as,

ZnO = 65+16

= 81

Na2O = 2(23)+ 16

= 62

Answer 2

Answer:

1.81

2.62

3.138

Explanation:

Just putting the values we get the formula unit mass as,

Zno = 65+16

= 81

Na20 = 2(23)+16

= 62