These dimensions include wheels, handles, side pockets, etc. As a general guide, carry-on baggage should have maximum length of 22 in (56 cm), width of 18 in (45 cm) and depth of 10 in (25 cm). Thus, the number concentration C isĬ = C / N A = 6 ×10 16 L −1 / 6 ×10 23 mol −1 = 10 −7 mol/L = 100 nmol/L.Carry-on baggage allowance can vary according to the airline, the cabin class you are traveling in and even the size of the aircraft. coli, may have about 60 copies, and the volume of a bacterium is about 10 −15 L. A typical protein in bacteria, such as E.The concentration of pure osmium tetroxide (molar mass = 254.23 g/mol) isĬ(OsO 4) = 5.1 kg/L / 254.23 g/mol = 20.1 mol/L. Likewise, the concentration of solid hydrogen (molar mass = 2.02 g/mol) isĬ(H 2) = 88 g/L / 2.02 g/mol = 43.7 mol/L. Therefore, the molar concentration of water isĬ(H 2O) = 1000 g/L / 18.02 g/mol ≈ 55.5 mol/L. The density of water is approximately 1000 g/L and its molar mass is 18.02 g/mol (or 1/18.02 = 0.055 mol/g).To create the solution, 11.6 g NaCl is placed in a volumetric flask, dissolved in some water, then followed by the addition of more water until the total volume reaches 100 mL. A typical task in chemistry is the preparation of 100 mL (= 0.1 L) of a 2 mol/L solution of NaCl in water.

Here, 58 g/mol is the molar mass of NaCl. The molar concentration of NaCl in the solution is thereforeĬ(NaCl) = 11.6 g / 58 g/mol / 104.3 mL = 0.00192 mol/mL = 1.92 mol/L. The density of such a solution is 1.07 g/mL, thus its volume is 11.6 g of NaCl is dissolved in 100 g of water.

For use in broader applications, it is defined as amount of substance of solute per unit volume of solution, or per unit volume available to the species, represented by lowercase c is the thermal expansion coefficient of the mixture. Molar concentration or molarity is most commonly expressed in units of moles of solute per litre of solution.

4.2 Sum of products of molar concentrations and partial molar volumes.

4.1 Sum of molar concentrations – normalizing relations.

Activity 3.4 linear dimensions