Question

4×6.022×1023 chlorine molecules at STP are taken answer the following question (atomic mass Cl=35.5 what is the mass of this element​

Answer 1

Answer:

One mole of chlorine atoms has a mass of 35.453g. A mole of something means that you have 6.023×10

23

units of that something. So if you have a mole of Cl atoms you have 6.023×10

23

atoms of Cl. Since a mole of chlorine atoms has a mass of 35.453 g, then any single one of those atoms will have a mass equal to 5.720×10

23

grams per atom. (35.453 g/mole÷6.023×10

23

atoms/mole)

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