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3.0g of a mixture of potassium carbonate and potassium chloride were dissolved in a 250cm3...

3.0g of a mixture of potassium carbonate and potassium
chloride were dissolved in a 250cm3
standard flask. 25cm3
of
this solution required 40.00cm3
of 0.01MHCl for neutralization.
What is the percentage by weight of K2CO3 in the mixture?
(K=39, O=16, C=12)
a. 92
b. 89
c. 72
d. 826?

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