Answer:
75 g/dm³
Explanation:
The following data were obtained from the question:
Mass of solute (NaCl) = 15 g
Volume of solution = 200 cm³
Concentration (in g/dm³) =?
Next, we shall convert 200 cm³ to dm³. This can be obtained as follow:
1000 cm³ = 1 dm³
Therefore,
200 cm³ = 200 cm³ × 1 dm³ / 1000 cm³
200 cm³ = 0.2 dm³
Thus, 200 cm³ is equivalent to 0.2 dm³.
Finally, we shall determine the concentration of the solution as follow:
Mass of solute (NaCl) = 15 g
Volume of solution = 0.2 dm³
Concentration (in g/dm³) =?
Concentration (in g/dm³) = mass / volume
Concentration (in g/dm³) = 15 g /0.2 dm³
Concentration (in g/dm³) = 75 g/dm³
