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Jorden Nguyen
Chemistry
25 September, 13:08
How many molecules of O2 are in 153.9 g O2?
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Lizbeth Garcia
25 September, 13:34
0
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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