Solutions and Saturation

Dominick made a solution using 15 g of NaCl in 150 mL of H₂O. What should Dominick add to his original solution to make a solution twice as concentrated?

• 5 g NaCl

• 15 g NaCl

• 100 mL H₂O

• 150 mL H₂O

Dominick made a solution using 15 g of NaCl in 150 mL of H₂O. What should Dominick add to his original solution to make a solution that is half as concentrated?

• 5 g NaCl

• 15 g NaCl

• 100 mL H₂O

• 150 mL H₂O

Charlie, Veruca, and Augustus each used 10 mL C₆H₈O₇ to make solutions. Charlie made his solution using 1500 mL H₂O, Veruca used 500 mL H₂O, and Augustus used 1000 mL H₂O. Whose solution is the most concentrated?

• Charlie's

• Veruca's

• Augustus's

Charlie, Veruca, and Augustus each used 10 mL C₆H₈O₇ to make solutions. Charlie made his solution using 1500 mL H₂O, Veruca used 500 mL H₂O, and Augustus used 1000 mL H₂O. Whose solution is the least concentrated?

• Charlie's

• Veruca's

• Augustus's

The concentration of a solution ____ with each addition of solute.

• increases

• decreases

• remains the same

Solution A is made with 10 mL C₆H₈O₇ and 50 mL of H₂O. Solution B is made with 20 mL C₆H₈O₇ and 100 mL H₂O. The two solutions have ____ concentrations and the masses of equal volumes of the two solutions would be ____.

• the same; the same

• different; different

• the same; different

• different; the same

Mr. Bowens's class OG Pugs found that 20 mL of a solute would saturate 50 mL H₂O. 5 mL of the solute has a mass of 6 g. What is the mass of the saturated solution?

• 6 g

• 24 g

• 50 g

• 74 g

Olivia made a pitcher of Koolaid. She added so much powder that some of the powder still remained at the bottom no matter how much she stirred. What could Olivia do to get the remaining Koolaid powder to dissolve?

• Add more H₂O

• Remove some H₂O

• Get a mixer

• Put the solution in the freezer

True or False: Undissolved solid at the bottom of a bottle is evidence that a solution is saturated.

• True

• False

Violet satured 150 mL H₂O with MgSO₄. Then she realized that she had lost track of how much MgSO₄ she had used. Which of the steps could Violet use to find out how many grams of MgSO₄ she used to saturate the H₂O?

• Filter the saturated solution to remove the undissolved MgSO₄

• Find the mass of the solution

• Subtract 150 g

• All of these steps