Question

Convert 3 moles of oxygen molecule into number of molecules.

Answer 1

Answer:

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Explanation:

One mole of oxygen atoms contains 6.02214179×1023 oxygen atoms. Also, one mole of nitrogen atoms contains 6.02214179×1023 nitrogen atoms. The number 6.02214179×1023 is called Avogadro's number ( NA ) or Avogadro's constant, after the 19th century scientist Amedeo Avogadro.

Each carbon-12 atom weighs about 1.99265×10−23g ; therefore,

(1.99265×10−23g)×(6.02214179×1023atoms)=12g of carbon-12.

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