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  4. An impure sample of pyrolusite ore (.MnO2.) consist of 70 %MnO2, 20 % inert impurities and rest is the moisture. On strong heating, all MnO2 is converted into MnO alongwith formation of O2 . What is the % of Mn in dried sample? (Atomic mass of Mn = 55)

Q. An impure sample of pyrolusite ore consist of inert impurities and rest is the moisture. On strong heating, all is converted into MnO alongwith formation of . What is the % of Mn in dried sample? (Atomic mass of Mn = 55)

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Solution:


% mass of Mn

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