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Q 1169067815.     `5` mL of `8`N nitric acid, `4.8` mL of `5`N hydrochloric acid and a certain volume of `17`M sulphuric acid are mixed together and made up to `2` L . `30` mL of this acid mixture exactly neutralise `42.9` mL of sodium carbonate solution containing one gram of `Na_2CO_3· 10H_2O` in 100 mL of water. Calculate the amount in gram of the sulphate ions in solution.
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