mani87 mani87
  • 01-08-2019
  • Chemistry
contestada

how many molecules of O2 are in 153.9 g O2?

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Photon013
Photon013 Photon013
  • 01-08-2019

Answer:

2.895*10^24

Explanation:

mass of Oxygen give = 153.9g

molar mass of O2 molecule = 16*2=32g/mol

n= mole

To find the mole

n= mass/ molar mass

n= 153.9/32

n=4.81mol.

To find the number of molecules of o

Nm= number of molecule

Nn = Number of mole

NA = number of Avogados

Nm= Nn * NA

Nm= 4.81 *6.02*10^23

Nm= 2.895*10^24

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