Question bank
Question Bank
Cambridge IGCSE Chemistry 0620 · 120 questions
Q113Stoichiometry
What is the percentage by mass of carbon in CO₂?
(a)12 %
(b)44 %
(c)27 %
(d)73 %
Correct answer: (c) 27 %
Explanation: 12/44 × 100.
Related lesson
3.2 Relative masses of atoms and moleculesStoichiometry Tags