passwella.
Menu

JAMB Chemistry 2014 Question 3

Question 3

Mole Concept and Stoichiometry

What is the percentage of sulphur in sulphur(IV) oxide? [S = 32, O = 16]

  1. A.66%
  2. B.25%
  3. C.40%
  4. D.50%
Show the answer and explanation

Answer: D (50%)

Explanation

SO2 has molar mass 32 + 32 = 64 g. % S = 32/64 × 100 = 50%.