Question

On the basis of formula unit mass, calculate the mass of the following compunds:
i) Na2 SO4
ii) K2 CO3​

Answer 1

Answer:

i) Na2 SO4

Explanation:

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Answer 2

Formula unit mass of K2C03

2×Atomic mass of K+1×Atomic mass of C+3×Atomic mass of O

= 2×39u+1×12u+3×16u

= 138 u.