Chemistry C2- Empirical formula - Higher tier

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You can use information about reacting masses to calculate the formula of a compound. Here is an example:

Question

  • Suppose 3.2 g of sulfur reacts with oxygen to produce 6.4 g of sulfur oxide. What is the formula of the oxide?
  • Use the fact that the Arof sulfur is 32 and the Arof oxygen is 16

Answer

Find the mass of each element. Conservation of mass tells us that the mass of oxygen = the mass of sulfur oxide - the mass of sulfur.

The mass of oxygen reacted = 6.4 - 3.2 =…

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