Molality Calculations

What is the molality of a solution when 12 g of NH₃ is dissolved in 250 g of water?

• .18 m

• 51 m

• 816 m

• 2.8 m

What is the molality of a solution when 48 g of NaCl is dissolved in 5 kg of water?

• 557 m

• 4.14 m

• .17 m

• 6.04 m

What is the molality of a solution when 2 g of lead is dissolved in 24 g of tin?

• .4 m

• .058 m

• .23 m

• .9 m

How many grams of NaOH do you need to add to 2 kg of water for a .3 m solution?

• 6 g

• .015 g

• .004 g

• 24 g

How many grams of NaCl do you need to make 500 mL of a .5 m solution? (density of water is 1 g/mL)

• 14.6 g

• 58 g

• .017 g

• .116 g

How many grams of KI do you need to add to 1.2 kg of water to make a .25 m solution?

• 50.1 g

• 34.8 g

• .001 g

• .25 g

Calculate the molality of a sulfuric acid solution containing 571.4 g of H₂SO₄ per liter of solution has a density of 1.329 g/cm³.

• 7.690 m

• 5.826 m

• 0.7576 m

• 1329 m

What is the molality of 15.00 M HCl with a density of 1.0745 g/cm³?

• 28.43 m

• 0.5276 m

• 546.9 m

• 1075 m

What is the molality of a 3.75 M H₂SO₄ solution with a density of 1.230 g/mL?

• 4.35 m

• 862 m

• 368 m

• 0.00435 m

What is the molality of a solution containing 16.5 g of naphthalene (C₁₀H₈) in 54.3 g benzene (C₆H₆)?

• 5.22 m

• 128 m

• 304 m

• 2.37 m