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31 questions
Molality (m) = moles of solute / _________________________.
kilogram of solvent
kiloliter of solvent
kilometer of solvent
ounces of solvent
Molar mass of NaOH is ______________________
40 grams/mol
50 grams/mol
45 grams/mol
38 grams/nol
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
The elements present in sodium hydroxide are
sodium oxygen and hydrogen
sodium , oxygen and chlorine
sodium, oxygen and boron
sodium, oxygen and carbon
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
Molarity is measured in _____.
moles per g.
mols per L.
moles per mm.
moles per mL.
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.
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.
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
Which equation is used to find molality?
Moles solute/L solution
Moles solute/kg solution
Moles solute/kg solvent
Grams solute/L solution
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
Which equation is used to find molality?
Moles solute/L solution
Moles solute/kg solution
Moles solute/kg solvent
Grams solute/L solution
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
What are the units of molarity?
M
m
Ml
Mr
What are the units of molality?
M
m
Ml
Mr
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
What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)
0.8 M
1.5M
3.0M
6.0M
Since "like dissolves like", water and oil will not mix because
both of them are polar
both of them are nonpolar
oil is polar and water is nonpolar
oil is nonpolar and water is polar
What is the molality of a solution when 48 g of NaCl is dissolved in 5 kg of water?
557 m
4.14 m
.17 m
6.04 m
What is the molarity of a solution when 80.0 g of sodium chloride (NaCl) are dissolved in 500.0 ml of water
1.37M
1.45 M
2.74M
6.25M
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