9. Solutions
Percent Concentrations
9. Solutions
Percent Concentrations - Video Tutorials & Practice Problems
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Get a 10 bullets summary of the topicPercent Concentrations deal with the amount (in mass of volume) of solute found within a given solution.
Mass and Volume Concentrations
1
concept
Percent Concentrations Concept 1
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52sPlay a video:
2
example
Percent Concentrations Example 1
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concept
Percent Concentrations Concept 2
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26sPlay a video:
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example
Percent Concentrations Example 2
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1mPlay a video:
5
Problem
ProblemHow many mL of ethanol are contained in a 750.0 mL bottle of wine that contains 11.0% (v/v) of ethanol?
A
1.5 mL
B
68.2 mL
C
82.5 mL
D
11.0 mL
6
Problem
ProblemCalculate the grams of solute needed to prepare the following:450 mL of a 2.0% m/v KOH solution.
A
1.1 g
B
9.0 g
C
4.5 g
D
2.3 g
7
Problem
ProblemWhat is the mass/volume percent concentration of the following solutions:0.075 mol sucrose (C12H22O11) in 270 mL of solution.
A
5.0 m/v %
B
2.8 m/v %
C
6.7 m/v %
D
9.5 m/v %
8
Problem
ProblemThe pain reliever ibuprofen is sold as an oral suspension for children 2-11 years of age. How many milligrams would you obtain in a 2.7 tsp dose if it contains 100 mg per 5 mL? (1 tsp = 5 mL)
A
1.0×102 mg
B
67 mg
C
2.7×102 mg
D
54 mg
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PRACTICE PROBLEMS AND ACTIVITIES (13)
- A mouthwash contains 22.5% (v/v) alcohol. If the bottle of mouthwash contains 355 mL, what is the volume, in m...
- What is the difference between a 5.00% (m/m) glucose solution and a 5.00% (m/v) glucose solution?
- What is the difference between a 10.0% (v/v) methanol (CH₄O) solution and a 10.0% (m/m) methanol solution?
- Calculate the mass/volume percent (m/v) for the solute in each of the following: a. 75 g of Na₂SO₄ in 250 mL ...
- Calculate the grams or milliliters of solute needed to prepare the following: c. 250. mL of a 10.0% (v/v) ace...
- A dilute aqueous solution of boric acid, H₃BO₃ is often used as an eyewash. How would you prepare 500.0 mL of ...
- What is the mass/volume percent concentration of the following solutions? a. 0.078 mol KCl in 75 mL of solutio...
- How many moles of each substance are needed to prepare the following solutions? a. 50.0 mL of 8.0% (m/v) KCl (...
- A patient receives 100. mL of 20.% (m/v) mannitol solution every hour. b. How many grams of mannitol does the...
- A patient needs 100. g of glucose in the next 12 h. How many liters of a 5% (m/v) glucose solution must be giv...
- Nalorphine, a relative of morphine, is used to combat withdrawal symptoms in heroin users. How many milliliter...
- An 80-proof brandy is a 40.% (v/v) ethanol solution. The 'proof' is twice the percent concentration of alcohol...
- A solution is prepared with 70.0 g of HNO₃ and 130.0 g of H₂O. The HNO₃ solution has a density of 1.21 g/mL. (...