
Chemical Solutions and Concentration Concepts
Interactive Video
•
Chemistry, Science
•
9th - 12th Grade
•
Hard

Ethan Morris
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula to calculate the number of moles from mass and molar mass?
Moles = Mass / Molar Mass
Moles = Molar Mass / Mass
Moles = Mass + Molar Mass
Moles = Mass * Molar Mass
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Avogadro's number is equivalent to which of the following?
12
6.02 * 10^23
3.14
1.00 * 10^6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you calculate percent composition of an element in a compound?
Mass of element / Total mass of compound * 100%
Mass of element + Total mass of compound
Mass of element - Total mass of compound
Total mass of compound / Mass of element * 100%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for percent yield?
Percent Yield = Actual Yield / Theoretical Yield * 100%
Percent Yield = Actual Yield - Theoretical Yield
Percent Yield = Theoretical Yield / Actual Yield * 100%
Percent Yield = Actual Yield + Theoretical Yield
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the correct formula for molarity?
Molarity = Volume - Moles
Molarity = Moles / Volume
Molarity = Volume / Moles
Molarity = Moles * Volume
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In a solution, what is the role of the solvent?
It is the mixture of solute and solvent.
It is the solid part of the solution.
It is the substance that is dissolved.
It is the substance that dissolves the solute.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the dilution equation used for?
To calculate the new concentration after adding a solvent
To find the mass of a solute
To determine the percent yield
To measure the absolute error
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