SOF NSO · Atoms and Molecules · Quiz
5 real SOF NSO questions on Atoms and Molecules. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.
Question 1 of 5
EASYAccording to the Law of Constant Proportions, a pure sample of water always contains hydrogen and oxygen in a fixed mass ratio of 1:8. If 18 g of water is decomposed, what mass of oxygen is obtained?