Question

what is the mass of 0.7 mole of O2 gas?​

Answer 1

no. of moles =W/GMW
0.7MOLES
GMW=32
MASS=n×GMW
=0.7×32
22.4
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Answer 2

o2 is diatomic so mass will double

mass of oxygen is 16 g

mx2 =16x2=32g

one mole of o2 gass is 32g

then0.7mole= onemole x 0.7

=0.7x32

=22.4

hope this helps you.

Karthikrikky12 ♥️