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Molecular Mass

124 amu of P4...

Question

124 amu of P4 will contain:(at mass of P=31) how many atoms or molecules of phosphorus?

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Solution

124 amu is the molecular mass. ( $31 \times 4$ )
124 g is the given mass.
USING THE FORMULA,
The no.of molecules will be $6.022 \times 10^{23}$

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