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(i)
Mass of oxide=6.40g-4.50g=1.9g
Mass of metal=6.02g-4.5g=1.52g
Mass of oxygen=1.9g-4.5g=0.38g
Cu O
Mass 1.52 0.38
Molar mass 64 16
Moles 0.02375 0.002375
Mole ratio 1 1
E.F.=CuO
(ii)(64+16)n=80
n=1
Chemical formula=CuO
Belan answered the question on February 13, 2019 at 09:59
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