CHMB16H3 Chapter 2: CHMB16 Chapter 2
Document Summary
Some si units: using prefixes as multipliers. Femto: 10^-15 abscissa: converting between units, 1 cal = 4. 184 j; 1kcal = 4. 184 kj, 1 pound = 0. 4536 kg, 1 mile = 1. 609 km. Chemical concentrations uniform composition: homogeneous mixture: a mixture of two or more substances that has a, heterogeneous mixture: a mixture that doesn"t have a uniform composition, concentration: how much solute is contained in a given volume/mass of. Electrolyte: a substance that dissociates into ions in solution. chloride): strong electrolyte: mostly dissociated into ions in solution (magnesium, weak electrolyte: partially dissociated into ions in solution (acetic o o acid). Formula mass (fm): the molecular mass of a strong electrolyte. Parts per million (ppm) = mass of substance/mass of sample x 10^6. Parts per billion (ppb) = mass of substance/mass of sample x 10^9: because the density of a dilute aqueous solution is close to 1. 00 g/ml, we frequently equate 1 g of water with 1 ml of water.
