Solution Concentrations

What is the concentration of a 0.50L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)

• 0.8 mol/L

• 1.5 mol/L

• 3.0 mol/L

• 6.0 mol/L

A student is preparing solutions for a laboratory experiment by dissolving solid solutes in liquid solvents. Which action will increase the rate of solubility

• lowering the temperature of the solvent

• stirring the solute in the solution

• increasing the pressure on the solution

• increasing the particle size of the solute

Tags

NGSS.HS-PS1-5

Since "like dissolves like", water and oil will not mix because

• both of them are polar

• both of them are nonpolar

• oil is polar and water is nonpolar

• oil is nonpolar and water is polar

How many moles of NaCl are present in a solution with a concentration of 8.59 mol/L and a volume of 125 mL?

• 1074 mol
• 0.069 mol
• 1.07 mol
• 62.7 mol

What is the concentration of 4.0 grams of sodium chloride in 3,800 mL of solution?

• 0.018 mol/L

• 0.018 mol

• 1.052 mol/L

• 1.052 mol

As we dilute a solution.....

• The volume increases and the concentration increases

• The volume increases and the concentration decreases

• The volume decreases and the concentration increases

• The volume decreases and the concentration decreases

How many mL of stock solution of 2.00 mol/L NaCl do you need to prepare 100.0 mL of 0.150 mol/L NaCl?

• 7.5 mL

• 15 mL

• 1333 mL

• 200 mL

Which solution is more concentrated?

Solution 1:

500 mL of water

100 g of salt

Solution 2:

500 mL of water

90 g of salt

• Solution 1

• Solution 2

• They have the same concentration

• I have no idea

Tags

NGSS.HS-PS1-5

Calculate the mass percent of solution, if there is 100 g of sugar and 400 g of water

• 30

• 25

• 20

• 15

What type of solution is it if more solute is added and it crystallizes?

• Unsaturated

• Supersaturated

• Concentrated

• Saturated