The exercises in groups A and B cover the same concepts. Solutions to group A exercises are located in appendix E.
A student attempts to prepare a 3.50 percent by weight saline solution by dissolving 3.50 g NaCl in 100 g of water. Since equation 11.2 calls for 100 g of solution, the correct amount of solvent should have been 96.5 g water (100 − 3.5 = 96.5). What percent by weight solution did the student actually prepare?
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