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20.00cm3 of a solution containing 0.53g of anhydrous Na2CO3 in 100cm3 requires 25.00cm3 of H2SO4...

20.00cm3 of a solution containing 0.53g of anhydrous Na2CO3 in 100cm3 requires 25.00cm3 of H2SO4 for complete neutralization.The conc of the acid solution in moles per dm3 is?.(H=1,C=12,O=16,Na=23,S=32).?
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