WorksheetsSolute Calculation Questions
Total questions: 15
Worksheet time: 8mins
Concentration is defined as:
The amount of a substance present in a given volume or mass of a solution.
The speed at which a reaction occurs.
The temperature at which a substance boils.
The color change observed during a reaction.
An example of a unit of measurement for concentration is:
mol/L
kg
m/s
cm2
300 uL = __________ mL what piece of equipment?
0.3 mL, p-200 micropipette
3 mL, graduated cylinder
30 mL, beaker
0.03 mL, P-20 micropipette
3 g = __________ mg what piece of equipment?
3000 mg, table top balance
300 mg, analytical balance
30 mg, ruler
30000 mg, beaker
76 mL = __________ L what piece of equipment?
0.076 L, graduated cylinder
0.76 L, beaker
7.6 L, pipette
0.0076 L, flask
50 uL = ______ mL what piece of equipment?
0.05 mL, P-200 micropipette
0.5 mL, P-1000 Micropiptte
5 mL, graduated cylinder
0.005 mL, beaker
Mass has to always be in grams because:
it ensures consistency in scientific measurements.
it is the only unit of mass that a balance measures
other units are not accurate.
grams are easier to use than kilograms.
How much solute is needed to make 10 mL of 20 mg/mL salt?
.200 g
200 mg
2 mg
100 mg
How much solute is needed to make 20 mL of 0.5 g/mL sugar?
10 g
5 g
20 g
0.5 g
How much solute is needed to make 15 mL of 10% CuSO4?
1.5 g
0.15 g
10 g
5 g
How much solute is needed to make 25 mL of 5% CuSO4?
1.25 mg
1.25 g
0.5 g
5 g
How much mass is needed to make 50 mL of 1M NaCl?
2900 g
29 g
2.9 g
.29 g
What mass is needed to make 80 mL of .5M HCl
.144 g
1.44 g
1440 g
144 g
How much stock and water are needed to make the following: Make 10 mL of 5% NaCl from a 25% stock NaCl.
2 mL of 25 % stock and 8 mL of water
8 mL of 25 % stock and 2 mL of water
10 mL of 25 % stock and 10 mL of water
4 mL of 25 % stock and 8 mL of water
How much stock and water are needed to make the following solution: Make 50 mL of 2 M HCl from 10 M HCl stock.
40 mL of 10M HCl stock and 10 mL water
15 mL of 10M HCl stock and 35 mL water
10 mL of 10M HCl stock and 40 mL water
10 mL of 1M HCl stock and 40 mL 10 M stock
