Molarity & Dilutions 2nd Chance Quiz

What is the molarity of 40.0 g of NaCl (MM=58.45g/mol) in 3,800 mL of solution?

• 0.18 M

• 0.0018 M

• 2.6 M

• 0.062 M

How many moles of NaCl are present in a solution with a molarity of 8.59M and 125 mL of solution?

• 1.07 gram
• 62.7 mol
• 1.07 mol
• 62.7 grams

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?

• 0.304 M

• 0.824 M

• 9.52 M

• 3.04 M

What mass of sugar (C₁₂H₂₂O_{11 ;} MM = 342.3 g/mol) is required to dissolve in 250. mL of water to make a concentration of 2.18 M?

• 1.87 x 10⁵ grams C₁₂H₂₂O₁₁

• 187 grams C₁₂H₂₂O₁₁

• 0.545 moles C₁₂H₂₂O_11a

• 1.59 x 10^-3 grams C₁₂H₂₂O₁₁

What is the concentration when 1.8 moles of NaOH are dissolved in 0.250 L of water?

• 450 M

• 0.0072 M

• 7.2 M

• 0.45 M

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

• 27.8 mL

• 27.78 mL

• 2.8 mL

• 278 mL

What will happen to the concentration (molarity) if more solvent is added to the solution?

• the concentration will increase as the volume increases

• the concentration will decrease as the volume increases

• the concentration will remain the same as the volume increases

Which solution is the LEAST concentrated?

• A

• B

• C

• D

• E