Question

define formula unit mass in short

Answer 1

Hey buddy here is ur answer !!!!!!!!!!!!

Formula unit mass is the sum of the atomic masses of all atoms present in a formula unit of a compound. It is calculated by adding the atomic masses of all the atoms present in oneformula unit .

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Answer 2

Answer:

The weighing machine measures this apparent weight and hence the mass indicated by it is less than the actual mass. Our actual mass will be more than 42 kg.