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A sample of copper sulphate pentahydrate...

A sample of copper sulphate pentahydrate, `CuSO_(4). 5H_2O` contains `3.782g` of `Cu`. How many grams of oxygen are in this sample?

A

`0.952 g`

B

`3.809 g`

C

`4.761 g `

D

`8.576 g`

Text Solution

Verified by Experts

The correct Answer is:
D
`CuCO_(4).5H_(2)O` has 1 mol of copper and 9 moles of oxygen atoms.
`63.5 g Cu = 9xx16 g` of oxygen
`3.782 g Cu = (9xx16xx3.782)/(63.5) = 8.576` of oxygen
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