Question

what is the mass of
1)0.2 Mole of oxygen atoms
2)0.5 miles of water molecules

Answer 1

O=>(16*0.2)g=3.2g
H20=>(18*0.5)g=9g

Answer 2

hey friend here is your answer
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1. one Mole of oxygen has a weight of 16gm
so 0.2 Mole of oxygen has a weight of 16×0.2=3.2gm

2. 1mole of water molecule has a weight of 18gm
0.5mole of water molecule has a weight of 18×0.5=9gm

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