

Dilution and Concentration Calculations
Interactive Video
•
Chemistry, Mathematics, Science
•
9th - 10th 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
What is the primary method used for solving dilution and concentration problems in this video?
Trial and error method
Graphical analysis
Special pharmaceutical formulas
Dimensional analysis and c1v1=c2v2 formula
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a pharmacist wants to double the strength of a cough syrup without increasing its volume, how many milligrams of the active ingredient should be added to a 60 ml container?
6 mg
12 mg
24 mg
30 mg
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the percentage strength of a solution after diluting 500 ml of a 15% solution to 1500 ml?
10%
7.5%
5%
3.5%
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When 50 ml of a 1:20 weight by volume solution is diluted to 1000 ml, what is the resulting ratio strength?
1:200
1:800
1:400
1:500
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a syrup containing 65% sucrose is evaporated to 85% of its volume, what will be the new percentage of sucrose?
70%
76%
85%
80%
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many grams of a 10% ammonia solution can be made from 1800 grams of a 28% ammonia solution?
4000 grams
4500 grams
5040 grams
3500 grams
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the volume in milliliters of a 30% solution evaporated to a 50% solution if the initial volume is one gallon?
2500 ml
2271 ml
3500 ml
3000 ml
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