Question

calculate the mass of 0.2 moles of oxygen molecule

Answer 1

mass of 1mole of o^2. 16g
mass of 0.2 moles of oxygen molecule=
0.2×16
3.2g

Answer 2

n=M×m

Where M=GIVEN MASS

m=Molar mass

n=0.2×16=32g...

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