Stoichiometry studies quantitative relationships between reactants and products in chemical reactions. Moles represent approximately 6.022×10²³ molecules. Molar mass is the weight of one mole of a substance. Mole ratios come from balanced chemical equation coefficients
Start with a balanced chemical equation showing reactants and products. Calculate the molar mass of each reactant from the periodic table. Convert reactant amounts from grams to moles
Empirical formula shows simplest expression of compound's elemental composition. Assume 100g of substance when given percentages. Convert percentages to grams and divide by atomic weight. Convert grams to moles using mole ratio per atomic weight. Divide each mole by smallest number of moles
A mole represents 6.02214076×10^23 particles or 12g of carbon-12 atoms. Moles are fundamental for quantifying chemical reactions. Molar mass is the mass of one mole of a substance
Avogadro's law states that equal volumes of gases contain the same number of molecules. The law relates gas volume to the amount of substance present at constant temperature and pressure. The law is a specific case of the ideal gas law
Stoichiometry measures relationships between reactants and products in chemical reactions. Chemical equations show reactants on left and products on right with arrows. Balanced equations must have equal numbers of atoms on both sides