Question

calculate the formula of unit mass of​

Answer 1

Answer:

Formula unit mass of ZnO = Atomic mass of Zn + Atomic mass of O = 65 + 16

= 81u

Formula unit mass of Na2O = 2 × Atomic mass of Na + Atomic mass of O = 2 × 23 + 16

= 62u

Formula unit mass of K2CO3 = 2 × Atomic mass of k + Atomic mass of C + 3 × Atomic mass of O

= 2 × 39 + 12 + 3 × 16

= 78 + 12 × 48

= 122u

Hope it helps

Answer 2

Answer:

formula unit mass of na20= 2× atomic mass

of na +atomic mass of o = 2 × 23 + 17

= 62u

formula unit mass of k2co3 = 2×atomic mass of k +atomic mass of c + 3 ×atomic mass of o

=2×39+12+3×16

=78+12×48

=122u

Explanation:

hope it helps you

thanku