topic 7.2 solution concentration: percent by mass

___________ refers to the amount of solute dissolved in a given amount per volume of solution

• Concentration

• Dilution

• Precipitation

• None of the above

What is the percent by mass of a solution made by dissolving 20.0 g of NaCl into 180.0 g of water?

• 10.0 %

• 11.1 %

• 80.0 %

• 20.0 %

What mass of water should be added to 22.0 g of KCl to make 5.50% by mass solution?

• 400 g

• 40 g

• 378 g

• 25 g

What is the percent concentration of sugar in pink lemonade if 28 g of sugar is added to 209 g of water?

• 14.7 %

• 5.14 %

• 13.4 %

• 8.47 %

• 11.8 %

How many grams of NaNO₃ are needed to prepare 100 g of 15.0 % by mass NaNO₃ solution? (MM = 85 g/mol)

• 15 g

• 1275 g

• 12.75 g

• 150 g

How many grams of solvent are in a 200.0mL solution thta is 6.50% by mass .

• 13.0g

• 187g

• 200.g

• 213g

How many grams of solute must be added to 250.0 mL of solution to make a 15.5% solution?

• 38.8g

• 212g

• 250g

• 15.5g

If 20.0 mL of acetic acid is dissolved in 180 mL of water then what is the percent by volume of the solution?

• 10.0%

• 11.1%

• 20.0%

• 14.3%