Percent Solutions 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

• 0.25 g

• 25 g

Tags

NGSS.HS-PS1-7

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

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

• True
• False

Tags

NGSS.HS-PS1-5

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

• 2
• 3
• 4
• 6 

What is the molarity of 0.068 mol of NaCl in 3.8 L of solution?

• 0.018 M

• 0.0011 M

• 1.052 M

• 0.062 M

How many grams of solute are dissolved in 0.125 L of 5.00 M NaCl (MM = 58.45)?

• 0.625 g NaCl

• 625 g NaCl

• 36.5 g NaCl

• 0.04 mol NaCl

Calculate the molarity of the following solution: 1.0 mole of KCl in 0.750 L of solution.

• 0.750 M

• 99 M

• 1.3 M

• 2.0 M