Dilutions

How much 0.05 M HCl solution can be made by diluting 250 mL of 10 M HCl?

• 301 mL

• 50,000 mL

• 80,000mL

• 343 mL

What is the volume (in liters) of a 0.20 M solution that contains 0.30 moles of Na₂SO₄ dissolved in it?

• 1.5 L
• 0.060 L
• 0.67 L
• 2.3 L

Molarity is measured in

• moles per kg
• mols per L
• moles per kJ
• moles per mL

Tags

NGSS.HS-PS1-5

How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?

(Hint: use the dilution equation)

• 27.8 mL

• 27.78 mL

• 2.8 mL

• 278 mL

How much 1.50M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?

(hint: use the dilution equation)

• 150. mL

• 151 mL

• 1.00 L

• 100. mL

How many liters of a 4.5M HCl solution are needed to make 350 ml of a 0.05 M solution? (Hint: use the dilution equation)

• 0.0038 L

• 38 L

• 31.5 L

• 0.0031 L

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250 mL?

• 15.9 M
• 0.636 M
• 0.642 M
• 1.59 M

If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?

• .188 M

• 3.78 M

• .389 M

• 1.76 M

If I dilute 250 mL of 0.10 M lithium acetate solution to a volume of 750 mL, what will the concentration of this solution be?

• 2 M

• 0.02 M

• 0.03 M

• 0.08 M

Tags

NGSS.HS-PS1-7

How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?

• 27.8 mL
• 27.78 mL
• 2.8 mL
• 278 mL