Chapter 3 - Stoichiometry Flashcards
molecular formula
a written formula that expresses the number of atoms of each type within one molecule of a compound
Avogadro’s number
6.022 × 10²³, the number of atoms in 12 grams of cabon-12
balanced chemical equation
a chemical equation showing the relative amounts of reactants and products
chemical equation
the symbolic representation of a chemical reaction
empirical formula
a chemical formula showing the simplest ratio of atoms in a compound
mass percent
the percent by mass of given element in a compound
molar mass
the mass in grams of one mole of particles of a substance
mole
the quantity of a given substance that contains 6.022 x 10²³ molecules or formula units
mole ratio
the ratio of moles of one substance to moles of another substance in a balanced chemical equation
percent yield
the actual yield of a product as a percentage of the theoretical yield
percent composition
the mass percentages of each element in a compound
product
a substance formed [and appearing to the right of the arrow] in a chemical reaction
reactant
a starting substance [appearing to the left of the arrow] in a chemical reaction
stoichiometry
the calculation of the quantities of reactants and products involved in a chemical reaction
theoretical yield
the maximum amount of a given product that can be formed when the limiting reactant is completely consumed
