Quiz Molarity and Dilutions

What is the molarity of a solution made from 325.4g of AlCl₃ (MM=133 g/mol) with enough water to make 500.0 mL?

• 14.88 M
• 4.89 M
• 4.44 M
• 2.44 M

You have 286.7g of PbO(MM=223.2 g/mol). For lab, you need 2.50M PbO. How much PbO can you make?

• 0.51 L
• 554 mL
• 514 mol
• 0.154 L

How many milliliters of concentrated 18M H₂SO₄ is needed to prepare 250 mL of a 6.0 M solution?

• 83.3 mL
• 0.083 L
• 1500 mL
• 1.5 L

Tags

NGSS.HS-PS1-7

How many moles are in 3 L of 0.6 M solution?

• 1.8 moles
• 0.2 moles
• 5 moles
• 0.6 moles

How many grams of solute are dissolved in 125.0 mL of 5.00M NaCl?

• 0.625 g NaCl
• 1.45 g NaCl
• 36.5 g NaCl
• 11.6 g NaCl

You have a 0.5 M MgSO₄ stock solution available.  Calculate the volume of the stock solution needed to make 2.0 L of 0.20 M MgSO₄.

• 0.8 L
• 5 L 
• 0.1 L
• 0.5 L

Tags

NGSS.HS-PS1-7

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

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

Tags

NGSS.HS-PS1-7

If I add water to 100.0 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be?

• 0.23 M
• 0.10 M
• 1.0 x 10⁵ M
• 1.0 M

Tags

NGSS.HS-PS1-7

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

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

• 150. mL
• 151 mL
• 1.00 L
• 100. mL