Final answer:
Calculations of concentration in molarity (mol/dm³) involve dividing the moles of solute by the volume of the solution in liters. Conversion from parts per million to molarity may require additional steps, and molality is determined by moles of solute per kilogram of solvent.
Step-by-step explanation:
Carrying out calculations involving amount of substance, volume, and concentration of a solution is critical in Chemistry.
The concentration (C) in mol/dm³, also known as molarity, is calculated using the formula C = n/V, where 'n' represents moles of solute, and 'V' is the volume of solution in liters. When working with concentration in parts per million (ppm), you can convert it into molarity by considering the density of the solution if needed, and then use the formula to find out the mass of the solute in the specified volume of solution. For example, if you have 0.500 L of solution with 0.24 mol of NaOH, the concentration is 0.24 mol / 0.500 L = 0.48 M.
Molality (m) is another concentration measure which is the number of moles of solute per kilogram of solvent. For example, if there are 0.63 mol of solute in 1.00 kg of solvent, the molality is 0.63 m.