Concentration

The ___ is the thing being dissolved

• solute
• solvent

Solvent is best defined as-

• a mixture in which the substances are spread out evenly between one another and cannot be told apart
• the ability of a substance to dissolve in another substance
• a substance that dissolves in another substance
• a substance into which another substance dissolves

Which answer best defines solute?

• a substance into which another substance dissolves
• a substance that dissolves in another substance
• to form a solution with another substance
• the ability of a substance to dissolve in another substance

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 mass percent sugar in a solution made of 100 g of sugar and 400 g of water?

• 30

• 25

• 20

• 15

What is the mathematical formula for % mass?

• % = (mass of solute/mass of solvent) x 100

• M=mol of solute/ L of solvent

• %=(mass of solute/mass of solution) x 100

• M = mol of solute/L of solution

What is the concentration, in percent by volume, of 15.3 mL of solute in 2.65 L of solution?

• 0.58%
• 0.0058%
• 5.8%

Concentration is

• the amount of solute in the solvent

• the amount of solvent in the solute

• density

• particle size

What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?

• 0.014 %
• 1.4 %
• 0.13%