Free Printable Molarity, molality, molefraction

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Molarity, molality, molefraction

Total questions: 14

Worksheet time: 40mins

Name

Class

Date

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

True or False? The higher the concentration of a solution the less solutes it has in it.

True

False

Molarity is measured in _____.

moles per g.

mols per L.

moles per mm.

moles per mL.

The _____ is the thing being dissolved.

solute

solvent

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

1074 mol

0.069 mol

1.07 mol

62.7 mol

How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide?

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?

0.018 M

0.0011 M

1.052 M

0.062 M

10.

How many grams of solute are dissolved in 125.0 mL of 5.00 M NaCl (MM = 58.45)?

0.625 g NaCl

625 g NaCl

36.5 g NaCl

0.04 mol NaCl

11.

How many grams of AgNO₃ (MM = 169.87) are needed to prepare 0.125M solution in 250 mL of water?

.03g

0.5g

5.3g

84.9g

12.

The sum of all mole fractions equal

0.1

13.

suppose a hydrochloric acid solution contains 36 g of HCl and 64 g of H₂O.what is the mole fraction of HCl?

0.78

0.99

0.22

3.6

14.

the number of moles of solute or solvent in a solution divided by the total number of moles of solute and solvent is known as

molarity

mole fraction

molality

percent by mass

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Molarity, molality, molefraction

Total questions: 14

Worksheet time: 40mins

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