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"weight/volume percent" means to treat the volume of aquous solution as equivalent weight. We know that 1.00L water is 1000g. Hence 20.00g NaCl in 1.00L solution is of a weight/volume percent of:
20.00g/1000g = 2% w/v.(answer)

The molar mass of NaCl is: 58.442 g/mol
20.00g NaCl = 0.342 mol
0.342 mol / 1L = 0.342 M (answer)

2007-11-27 16:42:00 · answer #1 · answered by Hahaha 7 · 0 0

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