2. Nomenclature and Concentration Definitions

Try these first

1. 1.

   Define mass concentration.

   Hint

   Think about how much of a substance is present in a specific amount of solution.

2. 2.

   What symbol is used for molar concentration?

   Hint

   It represents the number of moles per volume.

3. 3.

   What does Rho A1 represent?

   • Concentration in soil
   • Concentration in air
   • Mass of chemical

   Hint

   Refer to the definitions discussed in class.

4. 4.

   True or False: Molar concentration is represented by the symbol Rho.

   • True
   • False

   Hint

   Recall the distinction made between mass and molar concentration.

5. 5.

   Given that Rho A1 for a certain chemical is 50 mg/L and Rho A2 is 100 mg/L, calculate the partition constant K.

   Hint

   Remember the partition constant is a ratio of concentrations.

6. 6.

   If a substance shows a mass fraction of 0.3 in the solid phase and a density of the solid of 2 g/cm³, calculate the mass of that substance in 1 kg of solid.

   Hint

   Use the mass fraction definition for your calculations.