Concentration Calculations and Colligative Properties

What is the molarity of 4 grams of sodium chloride (NaCl) in 3,800 mL of solution?

• 0.018 M
• 0.018 m
• 1.052 M
• 1.052 m

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

• 1.074 mol
• 62.7 mol
• 1.07 mol
• 62.7 grams

How many grams of solute are dissolved in 125.0 mL of 5.00M NaCl?

• 0.625 g NaCl
• 36.52 g NaCl
• 36.5 g NaCl
• 0.625 mol NaCl

Tags

NGSS.HS-PS1-7

What is the percent composition of a sugar solution where 10 grams of sugar is added to 100 grams of water?

• .10%
• 0.091%
• 9.090909%
• 9.1%

What mass of solute is needed to make 75.0 g of a 3.4% solution?

• 2.55 g
• 22 g
• 0.05 g

What is the molarity of a solution composed of 8.210 g of potassium chromate, (molar mass= 194.20g/mol), dissolved in enough water to make .500L of solution?

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   $Molarity=\ \frac{molesofsolute}{L\ of\ solution}$  

• .0423 M

• .0846 M

• 16.4 M

• .172 M

A 2M solution contains

• 2 mol of solute dissolved in 1L of solvent

• 1 mol of solute dissolved in 2L of solvent

• 2 mol of solute dissolved in 1 mol of solvent

• 2 mol of solute dissolved in 1 kg of solvent

Colligative properties depend on the

• number of solute particles present

• size of solute particles present

• mass of solute particles present

• charge on solute particles present

Aqueous solutions that that conduct electricity well are known to have electrolytes that are

• strong

• weak

Colligative properties include

• freezing point

• boiling point

• vapor pressure

• all of the above