Question Detail
Question
What is the mass percent of chlorine in C₂H₃ClF₂? (C=12, H=1, Cl=35.5, F=19) (Duplicate, but providing correct calculation)
Correct Answer
Option B is the correct answer.
Detailed Explanation
Molar mass = (2×12)+(3×1)+35.5+(2×19)=24+3+35.5+38=100.5 g/mol. %Cl = (35.5/100.5)×100 = 35.3%.
Hint
Calculate total molar mass first, then (mass of Cl / total mass) × 100%.