Anewly discovered metalloprotein, which contains three atoms of mg per molecule of protein, is found to be 0.672% mg by mass. calculate the molar mass of the metalloprotein.

Mass percentage is given as:

%

Let the total mass of protein = 100 g.

Mass percentage of in protein = 0.672%

That means 0.672 g of is present in 100 g of protein.

Atomic mass of = 24.305 u

Number of moles =

Number of moles of =

Since, 1 molecule of protein contains 3 atoms of so, moles of protein is:

Moles of protein =

Rearranging the formula of number of moles as:

Substituting the values:

Molar mass of protein =

Molar mass of protein =

Hence, the molar mass of metalloprotein is .

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