The chemical stockroom is supplied with the following stock solutions: 0.100 M HCl, 0.0200 M NaOH, 0.0500 M KOH, 10.0% HBr (wt/vol), and 5.00% Na2CO3 (wt/vol). What volume of stock solution would be needed to obtain the following amounts of solutes? (a) 0.0500 mol HCl, (b) 0.0100 mol NaOH, (c) 0.100 mol KOH, (d) 5.00 g HBr, (e) 4.00 g Na2CO3,(f) 1.00 mol HBr, (g) 0.500 mol Na2CO3

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