

Calculating Molarity and Concentration
Interactive Video
•
Chemistry, Mathematics, Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it important to have the correct concentration of agents and solutions in experiments?
To ensure the experiment is safe
To reduce the cost of materials
To guarantee accurate results
To make the experiment faster
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the definition of molarity?
The concentration of a solution in percentage
The weight of a solute in grams
The volume of a solution in liters
The number of moles of solute per liter of solution
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate the molarity of a solution if you know the molecular weight of the solute?
Subtract the molecular weight from the total weight of the solution
Use the molecular weight to find the number of grams per liter
Multiply the molecular weight by the number of moles
Divide the molecular weight by the volume of the solution
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To prepare a 0.2 molar solution of sodium chloride, what should you do?
Use 58.4 grams of sodium chloride in 1 liter
Use 11.7 grams of sodium chloride in 1 liter
Use 23.4 grams of sodium chloride in 1 liter
Use 5.84 grams of sodium chloride in 1 liter
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much sodium chloride is needed to prepare 30 ml of a 1 molar solution?
1.75 grams
5.84 grams
0.58 grams
17.5 grams
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the relationship between molarity and millimolarity?
1 molar is 500 millimolar
1 molar is 1000 millimolar
1 molar is 10 millimolar
1 molar is 100 millimolar
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To prepare a 50 millimolar solution of sodium chloride, how much sodium chloride is needed per liter?
2.92 grams
5.84 grams
0.92 grams
1.75 grams
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