Atomic mass — task. Science CBSE Homework Assignments, Class 9.

1. The percentage of an element M is 53 in its oxide of molecular formula \(M_2O_3\). Its atomic mass is about

2. The formula unit mass of \(K_2CO_3\) is (Given atomic mass of K = 39 u, C = 12 u, O = 16 u)

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4. Atomic mass