Question

Calculate the no of molecules in 64 g oxygen. (Oxy 32)

Answer 1

Answer:

first we find out how many moles in given amount O². So we have to find the number of moles

no: moles = given mass / GMM

=64g/32g

=2 moles

No: molecules = Avogadro number ×number of moles

=6.022×10^23 ×2 O² molecules

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