I need help. What is the concentration in percent m/m if 3.6g of NaCl dissolved in 400mL of water?
回答 (1)
2018-01-21 2:35 am
✔ 最佳答案
Density of water = 1.0 g/mLMass of water = (400 mL) × (1.0 g/mL) = 400 g
Mass of solution = (400 + 3.6) g = 403.6 g
Mass of solute (NaCl) = 3.6 g
Concentration in percent m/m = (3.6/403.6) × 100(%) = 0.89(%) (to 2 sig. fig.)
收錄日期: 2021-04-18 18:04:44
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