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(20) 1-a) Describe the preparation of 2L of 0.12MHClO4 from the commercial reagent [71% HClO4(w/w)d:1.67](MwHClO4:100.5g/mol) b) What is the mass in grams of solute in

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(20) 1-a) Describe the preparation of 2L of 0.12MHClO4 from the commercial reagent [71\% HClO4(w/w)d:1.67](MwHClO4:100.5g/mol) b) What is the mass in grams of solute in 1b. 37mL of 5.75.104M benzoic acid ( C6H5COOH)(Mw:122g/mol) 2b. 4.50L of a solution that contains 31.7ppm of SnCl2

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