CHY 102 Lecture Notes - Lecture 14: Molar Mass
19 Oct 2015
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Document Summary
Leading zeros: before the first non- zero are not significant. A unit of measurement containing 6. 022 x 1023 particles are in a mole (6. 022 x 1023) Converting moles to the number of particles and particles to moles. Number of particles (atoms, molecules or formula units) Example: a sample are in the sample, how many particles does the sample have? contains 1. 25 mol of nitrogen dioxide, no2, how many molecules. The mass of one mol of any element is equivalent to the average atomic mass of the element: has a symbol of m and is expressed in g/mol. Finding the molar mass: find the total mass of each element, find the mass of how ever many mols the element has, add the masses together to get the molar mass.
