Molarity
Molality
PPM/PPB
Percent Mass
Gas Laws
100

Calculate the Molarity of a solution made by dissolving 2.0 mol of LiOH in 5.0 L of solution. 

0.4 M

100

What is the molality of a solution in which 0.42 moles of Aluminum Chloride have been dissolved in 4200 g of water?

0.1 m

100

A 2.00 kg sample of water contains 50.0 mg of mercury. What is the concentration of mercury in PPM?

25 ppm

100

Calculate the percent mass of a solution made by dissolving 20.0 g sugar in 500.0 g solution.

4% 

100

Calculate the final volume of a gas if 5.0 L of that gas is at 2.0 atm of pressure and the pressure increases to 4.0 atm. Assume temperature is constant. 

2.5 L 

200

Calculate the Molarity of a solution made by dissolving 4.0 mol of CaClin 500 mL of solution.

8.0 M

200

What is the molality of a solution in which 0.378 mol Carbon Dioxide is dissolved in 629 g of water? 

0.601 m

200

What is the concentration of a solution, in parts per million, if 0.02 grams of NaCl is dissolved in 1000.0 grams of solution?

20 ppm

200

Calculate the mass of solute in a 10% salt solution if the mass of the solution is 350 grams.

35 g NaCl

200

Calculate the final pressure of air if the pressure is 1.0 atm at 300 K and the temp is lowered to 200 K. Assume Volume remains constant. 

0.67 atm 

300

Calculate the Molarity of a solution made by dissolving 55.0 g NaF in 250.0 mL of solution. (MM= 42 g)

5.2 M

300

What is the molality of a solution in which 14.5 g NaCl has been dissolved in 720.0 g of water? (MM=58.44)

0.34 m

300

What is the concentration in ppm of selenium if 1.3 milligrams is found in 2500 kg of soil?

0.00052 ppm

300

Calculate the percent mass if 4.0 g sucrose is dissolved in 80.0 g of water.

*Remember, you don't have the total solution here

4.8%

300

Calculate the final temperature of 4.0 L of a gas at 50.0 C if the gas expands to 20.0 L. Assume pressure remains constant. 

1615 K

400

What mass of NaCl would be needed to make 400 mL of a 0.55M solution of Sodium chloride

12.9 g NaCl

400

What is the molality of a solution in which 4.0 moles of NaCl are dissolved into 2.7 kg of water? 

1.48 m 

400

A sample of water was tested for lead. Results show 0.025 mg of lead in a 50.0 kg sample of water. What is the concentration of lead in PPB?

0.5 ppb

400

Calculate the percent mass of a solution made by dissolving 50.0g of solute in enough water to make 500g solution.

10%

400

Calculate the pressure of 1.25 mol of a gas, in kPa, if the volume of the gas is 10.0 L at 350 K. 

363.6 kPa

500

What mass of RbBr would be needed to make 1.5L of a 0.60M solution of Rubidium Bromide?

148.9 g RbBr

500

What is the molality of a solution in which 25.0 g of Sodium Chloride is dissolved in 3500 g of water?

0.123 m 

500

A sample of contaminated water contains 0.002 mg of mercury in 1000 g of water. What is the concentration of mercury in PPB? 

2 ppb

500

What mass of salt would be required to make 600 g of a 7.0% salt solution?

42 g NaCl

500

How many moles of a gas would be present in 40.0 L had a pressure of 200 kPa and a temperature of 85.0 C?

2.69 mol 

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