8. Convert into mole.
(a) 12 g of oxygen gas
(b) 20 g of water
(c) 22 g of carbon dioxide.
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Number of moles = Given mass/Atomic mass in gram
(1).= 12/16
= 0.75mole
(2).= 20/18
=11.1111...mole
(3). = 20/44
= 0.454545..mole
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