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Please check attached image.​-example-1
User Fabrice TIERCELIN
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1 Answer

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Explanation:

1) Molecular weight = vapour density × 2 = 43 = 86

→ Empirical formula × n

→ n = molecular weight/vapour density = 86/43 = 2

hope this answer helps you dear..and about other I have no idea!

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User Domdomegg
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