Solutions Molarity

Why is this chemistry meme funny? (or, why is SUPPOSED to be funny?)

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Molarity (M) is also written as...

• grams of solute/deciliters of solvent (g/dL)

• grams of solute/liters of solution (g/L)

• moles of solute/liters of solution (mol/L)

• moles of solute/milliliters of solvent (mol/mL)

Calculate the mass of NaOH needed to make 10.0 mL of a 2.0 M NaOH solution. (MW = 40 g/mol).

• 5 grams

• 2000 grams

• 0.3 grams

• 0.8 grams

• 800 grams

What mass of NaCl is needed to prepare 850 mL of 6.0 M NaCl solution? (MW = 58.44 g/mol).

• 5.1 grams

• 298,044 grams

• 87 grams

• 0.087 grams

• 298 grams

What mass of glucose is needed to make 100 mL of a 0.25 M glucose solution? (MW = 180 g/mol)

• 4.5 g glucose

• 4,500 g glucose

• 25 g glucose

• 0.25 g glucose

• 180 g glucose

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

• .304 M

• 1.76 M

What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to 500 mL?

• 300. M

• 31.3 M

• 3.13 M

• 1.56 M

Molarity is ...

• grams of solute/deciliters of solvent.

• grams of solute/liters of solution.

• moles of solute/liters of solution.

• moles of solute/milliliters of solvent.

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

What is the molarity of 0.0684 mol of NaCl in 3.8 L of solution?

• 0.018 M

• 0.001M

• 1.052 M

• 0.062 M

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NGSS.HS-PS1-5