Question detail
If 15 grams of potassium nitrate (KNO3) is dissolved in 0.75 dm³ of solution, what is the concentration of the solution in g/dm³?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Use of amount of substance in relation to masses of pure substances
Question
If 15 grams of potassium nitrate (KNO3) is dissolved in 0.75 dm³ of solution, what is the concentration of the solution in g/dm³?
Answer
20 g/dm³
Explanation
The concentration is determined by dividing the mass of the solute by the volume of the solution. This question assesses the understanding of how to calculate concentration from mass and volume.
Common mistake
Common Mistake in Concentration Calculations
Students often confuse the units of mass and volume when calculating concentration, leading to incorrect answers.
Always ensure that mass is in grams and volume is in cubic decimeters (dm³) before performing the calculation.
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