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lawyer [7]
2 years ago
12

The percent by mass of copper in CuBr2 is Use mc004-1.jpg. 28.45%. 44.30%. 63.55%. 71.55%.

Chemistry
2 answers:
maxonik [38]2 years ago
8 0

i believe it is A on e2020

Greeley [361]2 years ago
3 0
First, we must find the total mass of CuBr₂:
Mass = 64 + 2 x 80
Mass = 224

Percentage mass of copper = mass of copper x 100 / total mass
Percentage mass of copper = (64 / 224) x 100
Percentage mass of copper = 28.45%
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