# science

posted by gary lee

When 9.6 grams of NaBr are dissolved in enough water to create a 165-gram solution, what is the solution's concentration, expressed as a percent by mass?
4.8% NaBr
5.5% NaBr
5.8% NaBr
6.2% NaBr

1. i got u

165 g - 9.6 g = 155.4 g H2O = 155.4 ml
9.6 g/155.4 ml x 100 ml = 6.18%

im not a nerd cause that stupid

2. gary lee

thank you finallyyyyyyyyyyyyyyyyy

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