Chemistry · Oct / Nov 2019 · Paper 12 · Question 10
5070The mole and the Avogadro constant
What is the ratio of the number of molecules in 71 g of gaseous chlorine to the number of molecules in 2 g of gaseous hydrogen?
- A1 : 1
- B1 : 2
- C2 : 1
- D71 : 2
As printed in the paper
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Correct answer: A. 1 : 1
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