Molar concentration
Answers are for parents and teachers.
1
3.2 mol of a substance is dissolved to make 800 mL of solution. What is C_M in mol/L?
4
2
How many grams of KOH are in 300 mL of 0.5 M KOH solution (M = 56 g/mol)?
8.4 g
3
In how many litres of a 0.25 M solution are there 2 mol of solute?
8
4
How many mL of water must be added to 250 mL of 2 M solution to make it 1 M?
250
5
Why is molar concentration defined by the volume of the solution rather than its mass?
The volume is convenient to measure accurately with a volumetric flask, which makes laboratory preparation easier.