- Download PDF
1 Answer | Add Yours
The mass of the crucible is given as 18.2 g. The mass of the crucible + mass of the silicon is 18.48 g.
This gives the mass of the silicon alone as 18.48 - 18.20 = 0.28 g.
The mass of the crucible and the silicon oxide is 18.80 g
This gives the mass of the silicon oxide as 18.8 - 18.2 = 0.6 g
So we have 0.28 g of silicon reacting with 0.6 - 0.28 = 0.32 g of oxygen to give the silicon oxide.
The ratio of the molar mass of oxygen to the molar mass of silicon is 16 : 28. From what we have found above, that 0.32 g of oxygen reacts with .28 g of silicon, we can say that the molecular formula of the silicon oxide is SiO2.
The required empirical formula of the silicon oxide is SiO2.
We’ve answered 324,585 questions. We can answer yours, too.Ask a question