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Igniting MnO(2) in air converts it quant...

Igniting `MnO_(2)` in air converts it quantitatively to `Mn_(3)O_(4)`. A sample of pyrolusite is of the following composition: `MnO_(2) = 80%`, `SiO_(2)` and other inert constituents = 15%, and rest bearing `H_(2) O`. The sample is ignited to constant weight. What is the percent of `Mn` in the ingnited sample?

A

0.594

B

0.55

C

0.568

D

0.586

Text Solution

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The correct Answer is:
A
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