CHM 2045 Lecture Notes - Lecture 3: Molar Mass, Chemical Formula, Molar Concentration
Document Summary
Formula mass:the sum of the atomic masses ofall the atoms in the chemical formula of a molecule (unit:amu) Formula mass =(number of atoms of element 1 x atomic mass ofelement 1) to its formula mass numerically equivalent number of atoms of element 2x atomic mass ofelement 2) + number of atoms ofelement 3xatomic mass ofelement 3) + Molar mass of a compoundthe mass in grams ofi mole ofits molecules (g) moll. 3. converting between mass number ofparticles molar mass in combination w/arogadro"s number can be used to determine the # of atoms in a given mass ofthe element / compounds maramass. 3. 2 determining an empirical formula from experimental data empirical formula gives the simplest whole number ratio ofatoms (notmasses) ofeach elementin a compound can be determined from elemental analysis. 3. 5 solution solution:a homogenous mixture oftwo or more substances solvent:solution componentthat is higher relative to other components solute: solution component presentin a concentration less than thatof the solvent.
