Question

A biomolecule contains 0.4% Mg2+ by mass. The
number of magnesium ions present in 2.5 g of
biomolecule is
1)Na/24
2)Na/2400
3)100Na/24
4)Na/100

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Answer 1

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Secondary School Chemistry 13+7 pts

A biomolecule contains 2% magnesium by mass. The minimum molecular mass of biomolecule is

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SambhaviSarva

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gadakhsanket

Gadakhsanket ★ Brainly Teacher ★

Dear Students,

◆ Answer -

1200 g/mol

◆ Explanation -

Atomic mass of Mg is 24.

Given smallest biomolecule must contain at least 1 atom of Mg.

Minimum molecular mass of biomolecule is calculated as -

Minimum mass of biomolecule = Atomic mass of Mg × 100 / Percentage of Mg

M = 50 × 24

M = 1200 g/mol

Therefore, least possible molecular mass of given biomolecule is 1200 g/mol.

Hope this helps you understand..

Answer 2

Answer:

I think Na/24

Explanation:

Na/24

hope it helps