A sample of well water contains 140 gm/m 3 Ca 2+ ions and 345 gm/m 3 Na + ions. The hardness of the sample of water, expressed in terms of equivalent CaCO 3 in gm/m 3 is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)
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MT 1 : Stoichiometry in Chemical Engineering
25 Qs . 25 Marks . 15 Mins
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