Solutions and Molarity

One mole of oxygen has a mass of 16 grams. How much oxygen does one liter of 3 molar oxygen solution contain?

• 16 grams

• 32 grams

• 48 grams

• 100 grams

50 grams of sugar are dissolved in 2 liters of water. What is the concentration of sugar in the resulting solution?

• 50 grams/liter

• 25 grams/liter

• 100 grams/liter

• 75 grams/liter

Which type of solution contains more solute in a given volume of solvent?

• A concentrated solution

• A dilute solution

How many L of stock solution of 2M NaCl do you need to prepare 100L of 0.150M NaCl?

• 7.5 L

• 15 L

• 1333 L

• 200 L

Molarity is measured in _____.

• moles per g.

• mols per L.

• moles per mm.

• moles per mL.

Tags

NGSS.HS-PS1-5

Which of the solutions above is the most dilute

• A

• C

• E

• They are all the same concentration

Calculate the molarity of a solution containing 1.5 moles of NaCl in 0.5 L of solution.

• 1.5 M

• 3 M

• 0.33 M

• 0.75 M

The _____ is the thing being dissolved.

• solute

• solvent

How many L of water would I have to add to dilute 2 M HCl to make 250 L of 0.75 M HCl?

• 94 L

• 375 L

• 667 L

• 167 L

Which solution is more concentrated?

• Solution 1

• Solution 2

• They have the same concentration

• I have no idea

Tags

NGSS.HS-PS1-5