Asked by gloria
How many bromine molecules, Br2, have a mass equal to 31.8 g?
Answers
Answered by
drwls
The molecular weight of Br2 is 159.8. 31.8 g is 31.8/159.8 = 0.199 moles
Multiply that by Avogadro's number for the number of molecules.
Multiply that by Avogadro's number for the number of molecules.
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