Question

Calculate the number of molecules in 8 g of o2

Answer 1

Hi ☺️☺️

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Molar mass of oxygen = 16 g.

So

32 g of oxygen = 1 mole.

1 g of oxygen = 1 / 16 mole

8 g of oxygen = 1 / 16 × 8

⇒ 1/ 2 mole = 0.5 moles

No of atoms = 0.5 × 6.02 × 10²³

⇒ 3.01 × 10²³

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Thanks !

@AarohiG ❤️

Answer 2

hey mate

here is your answer