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- 1. Multiple Choice
Molality (m) = moles of solute / _________________________.
kilogram of solvent
kiloliter of solvent
kilometer of solvent
ounces of solvent
- 2. Multiple Choice
Molar mass of NaOH is ______________________
40 grams/mol
50 grams/mol
45 grams/mol
38 grams/nol
- 3. Multiple Choice
What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?
5 mol/kg. solvent
4 mol/kg solvent
3 mol/kg. solvent
2.5 moles /kg solvent
- 4. Multiple Choice
The elements present in sodium hydroxide are
sodium oxygen and hydrogen
sodium , oxygen and chlorine
sodium, oxygen and boron
sodium, oxygen and carbon
- 5. Multiple Choice
molality is defined as ________________________
the moles of solute per kilogram of solvent
moles of solute per liter of solution
mass of solute/ mass of solution
mass of solute/ mass of solvent X 100
- 6. Multiple ChoiceWhich sweet tea would you expect to taste the sweetest?1M3M3.1M2.5M
- 7. Multiple ChoiceTrue or False? The higher the concentration of a solution the less solutes it has in it.TrueFalse
- 8. Multiple Choice
Molarity is measured in _____.
moles per g.
mols per L.
moles per mm.
moles per mL.
- 9. Multiple Choice
The _____ is the thing being dissolved.
solute
solvent
- 10. Multiple ChoiceWhat is the mass of 0.75 moles of (NH4)3PO4?101.75 g121.75 g111.75 g131.75 g
- 11. Multiple Choice
What is a solvent?
The substance that does the dissolving in a solution.
The substance that is being dissolved in a solution.
The mixing of different substances.
The process in which neutral molecules lose or gain electrons.
- 12. Multiple Choice
A solution that is considered unsaturated would _____.
be dark in color.
have a strong scent.
have a large amount of solute.
have a small amount of solute.
- 13. Multiple ChoiceHow many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?1074 mol0.069 mol1.07 mol62.7 mol
- 14. Multiple Choice
What do molarity and molality have in common?
Both have "moles solute" in the numerator
Both have "kg solvent" in the denominator
Both have "L solution" in the denominator
Both have "moles solution" in the denominator
- 15. Multiple Choice
Which equation is used to find molarity?
Moles solute/L solution
Moles solute/kg solution
Moles solute/kg solvent
Grams solute/L solution
- 16. Multiple Choice
Which equation is used to find molality?
Moles solute/L solution
Moles solute/kg solution
Moles solute/kg solvent
Grams solute/L solution
- 17. Multiple Choice
What do molarity and molality have in common?
Both have "moles solute" in the numerator
Both have "kg solvent" in the denominator
Both have "L solution" in the denominator
Both have "moles solution" in the denominator
- 18. Multiple Choice
Which equation is used to find molarity?
Moles solute/L solution
Moles solute/kg solution
Moles solute/kg solvent
Grams solute/L solution
- 19. Multiple Choice
Which equation is used to find molality?
Moles solute/L solution
Moles solute/kg solution
Moles solute/kg solvent
Grams solute/L solution
- 20. Multiple Choice
How do you convert from grams to moles?
Divide by the molar mass
Multiply by the molar mass
Divide by Avogadro's number
Multiply by Avogadro's number
- 21. Multiple Choice
What are the units of molarity?
M
m
Ml
Mr
- 22. Multiple Choice
What are the units of molality?
M
m
Ml
Mr
- 23. Multiple Choice
What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5 Kg of water?
2.0 M
0.22 m
135 m
2.0m
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