Question

uestions
1. Calculate the molecular masses
of H. OCL, CO, CH, CH
CH NH, CH,OH.
2. Calculate the formula unit
masses of ZnO, Na, K,CO
given atomic masses of Zn = 65 u.
Na = 23 u. K = 39 u C = 12 u.
and O = 16
1 mole of ca​

Answer 1

Answer:

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Explanation:

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Answer 2

- The formula unit mass of

(i) ZnO = 65 u + 16 u = 81 u

(ii) Na2O = (23 u x 2) + 16 u = 46 u + 16 u = 62 u

(iii) K2C03 = (39 u x 2) + 12 u + 16 u x 3

= 78 u + 12 u + 48 u = 138 u