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  4. A protein 'A' contains 0.30 % of glycine (molecular weight 75). The minimum molar mass of the protein ' A ' is × 103 g mol -1 [nearest integer]

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Q. A protein '$A$' contains $0.30 \%$ of glycine (molecular weight $75$). The minimum molar mass of the protein ' $A$ ' is ____$\times 10^{3} \,g\, mol ^{-1}$ [nearest integer]

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Solution:

$0.30 \%$ glycine is equal to $75$
$1 \% \longrightarrow \frac{75}{0.30} $
$100 \% \longrightarrow \frac{75}{0.30} \times 100 $
$=25000\, g$