3.7 Solutions and Mixtures

Fill in the Blank

If there is 0.09 mol NaCl dissolved in 0.80 L of solution, what is the molarity?

(round the answer to two decimal places)

Open Ended

If I have 18 M H₂SO₄ and I want to make 500 mL of a 1 M H₂SO₄ solution, what do I do?

Multiple Choice

What is the molarity of a solution containing 400 g of CuSO₄ (FM: 159.6 g/mol) in 4.0 L of solution?

• 100 M

• 1.6 M

• 0.626 M

• 0.01 M

Multiple Choice

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

• 7.5 mL

• 15 mL

• 1333 mL

• 200 mL

Multiple Choice

How many mL of 1.0M KBr solution would you need to prepare 250 mL of a 0.2M dilution?

• 175 mL

• 250 mL

• 50 mL

• 5 mL

Multiple Choice

How many moles of Na+ ions are in 100.mL of 0.100 M Na₃PO₄ (aq) ?

• 0.300 mol

• 0.100 mol

• 0.0300 mol

• 0.0100 mol

Multiple Choice

How many grams of CaCl₂ (molar mass =111g/mol) are needed to prepare 100.mL of 0.100 M Cl (aq) ions?

• 0.555 g

• 1.11 g

• 2.22 g

• 5.55 g