CHEM101 Study Guide - Dan Piraro, Chemical Formula, Empirical Formula

• School: University of Alberta
• Department: Chemistry
• Course: CHEM101
• Professor: Yoram Apelblat

Document Summary

Bizarro by dan piraro nomenclature (handout 2), stoichiometry. W, oct 1, 2pm f, oct 3, 8am. Online for marks quiz when we finish lewis optional in-class lecture. Structural formula: which atoms, exact numbers, arrangement of atoms. A different measurement gave the molar mass m as. 98. 96 g/mol. (empirical formula)x = molecular formula: convert masses into moles. Total mass is not given but percent composition is given in mass percent, so you can choose any total mass you want. 1. 008 g/mol = 4. 04 mol h: calculate mole ratios (divide by the smallest # mol) moles of cl moles of cl = moles of h moles of cl = moles of c moles of cl = 2. 021 mol = 1. 00: get empirical formula from mole ratios. 1 cl : 1 c : 2 h: get molecular formula from the empirical formula and the molar mass. 12. 01 + 35. 34 + 2 (1. 008) g/mol = molar mass empirical mass =