:See Calcium Oxide and Sulfur dioxide for chemical formulas, and stoichiometry and Chemical _ equation # Balancing _ chemical _ equations for a description of how to calculate stoichiometric ratios .-- 32 " "'17 : 52, 9 April 2010 ( UTC)
22.
Knowing the mass of the starting material and the total mass of inclusions, such as ligands, structural defects, or side-products of reaction, which are liberated upon heating, the stoichiometric ratio can be used to calculate the percent mass of the substance in a sample.
23.
Although the exact definition of a cocrystal remains topic of debate, most solid-state chemists agree nowadays that they can be defined as solids that are crystalline single phase materials composed of two or more different molecular and / or ionic compounds generally in a stoichiometric ratio which are neither solvates nor simple salts . Several subclassifications exist.
24.
By measuring the proportion of oxygen in the remaining exhaust gas, and by knowing the volume and temperature of the air entering the cylinders amongst other things, an ECU can use look-up tables to determine the amount of fuel required to burn at the stoichiometric ratio ( 14.7 : 1 air : fuel by mass for gasoline ) to ensure complete combustion.
