Question detail
Calculate the amount in moles of solute in a solution with a concentration of 1.5 mol/dm3 in a volume of 3 dm3.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using concentrations of solutions in mol/dm3 (chemistry only) (HT only)
Question
- A. 4.5 mol
- B. 2.0 mol
- C. 1.5 mol
- D. 3.0 mol
Answer
4.5 mol
Explanation
The amount in moles is calculated using the formula moles = concentration x volume. Therefore, moles = 1.5 mol/dm3 x 3 dm3 = 4.5 mol.
Common mistake
Incorrect Unit Conversion
Students often forget to convert volumes from cm3 to dm3 when substituting into concentration equations.
Always convert cm3 to dm3 by dividing by 1000 before using the volume in calculations.
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