CHE 131 Study Guide - Midterm Guide: Molar Mass, Formula Unit, Ionic Compound
Document Summary
Combination reaction 2 substances combine to form one product chemical equations describe proportions of reactants and products during a chemical reaction. Reactants substances that are consumed during a chemical reaction. Products substances that are formed during a chemical reaction. Physical state of products / reactants : (5) solid , (f) liquid, (g) gas and (ag) aqueous solution. Mole unit of a specific quantity of a substance. 1 mole = 6. 022 1023 particles ( avogadro s number) = 12g of carbon 12. Expresses macroscopic quantities ( atoms /molecules) involved in chemical reactions. Indicated in chemical lava-110h by coefficients : 1 atom of he = 4. 003 am 4: 1 mole of he ( 6. 022 1023a-10ms) = 4. 003g. Molar mass (m) of he is 4. 003 91m01. Law of conservation of mass sum of masses of reactants in a chemical equation. Is equal to the sum of the masses of the products.
