Question Detail
Question
What is the molar mass of magnesium pyrophosphate (Mg₂P₂O₇) used in phosphorus calculations?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Mg₂P₂O₇: 2×Mg (24.3) + 2×P (31) + 7×O (16) ≈ 48.6 + 62 + 112 = 222.6 g/mol ≈ 222 g/mol.
Hint
Two Mg, two P, seven O.