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Solution concentration calculation
The salty water contains sodium chloride.
The scientist collected 2.40 g of sodium chloride from 150 cm3 of salty water.
Calculate the concentration of sodium chloride in grams per dm3
Concentration of sodium chloride = g/dm3
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Marking points
- 1 Convert 150 cm3 to 0.15 dm3.
- 2 Use concentration = mass / volume = 2.40 / 0.15.
- 3 Give 16 g/dm3.
Full-mark answer
150 cm3 = 0.15 dm3. Concentration = 2.40 / 0.15 = 16 g/dm3.