Chemistry, asked by oggymemer, 7 months ago

calculate the percentage composition of copper 2 oxide (cu=64,o=16)

Answers

Answered by Piyushkhathuriya007

0

Explanation:

Let the mass of mixture be 100 g.

Mass of CuO = x g

Mass of Cu

2

O=y g

So, mass of oxygen =

79.5

16x

+

143

16y

=12 g

Similarly, mass of Cu=

79.5

63.5x

+

143

127y

=88 g

so, x=8.65% and y=91.35%

Therefore, the nearest integer is 9%

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