A protein molecule has a molecular weight of 7.70 × 10⁵. The mass percent of magnesium in the protein is 3.16 × 10^-3 %. How many magnesium atoms are there in one protein molecule?

Question

Quizplus · Accepted Answer

The mass of magnesium in the protein is calculated by multiplying the molecular weight by the mass percent (7.70 × 10^5 * 3.16 × 10^-5). Dividing this mass by the atomic weight of magnesium (24.305) gives approximately 1 magnesium atom per protein molecule.

A Protein Molecule Has a Molecular Weight of 7