no. of moles in 4g of oxygen
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No. of moles = Given mass/ Atomic mass
given mass=4g and atomic wt of o is 16g.
no. of moles in 4g= 4/16=1/4= 0.25 mole
given mass=4g and atomic wt of o is 16g.
no. of moles in 4g= 4/16=1/4= 0.25 mole
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