Unit 3 · Stoichiometry
Question Bank
Cambridge IGCSE Chemistry 0620 · 30 questions
Q23Stoichiometry
Using Ar(H) = 1 and Ar(O) = 16, what is the relative molecular mass, Mr, of H2O?
(a)18
(b)17
(c)16
(d)34
Correct answer: (a) 18
Related lesson
3.2 Relative masses of atoms and moleculesStoichiometry Tags