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Vivian udeze

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Hydrated salt =Na2co3 ×H2o % by mass of hydrated salt =100-62•94=37•06% Mass of anhydrous salt Na2Co3 in the hydrated salt (2*Na)+(1*c)+(3*o) (2*23)+(1*12)+(3*o) =46+12+48 =106g

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