quantitative chem

• concentration (g per dm^3) = mass(g) / volume (dm^3)
• concentration (mol per dm^3) = n of moles / volume (dm^3)
• 1 mole of gas at room temp and pressure = 24dm^3
• % yield= actual mass of product / maximum theoretical mass of product x 100
• the relative atomic mass is average mass of atoms in an element, taking into account mass and abundance of its isotopes.
• the relative formula mass is the sum of relative atomic masses of all atoms in the formula.
• avogado’s constant = 6.02 x 10^23
• mass = mr x moles
• the atom economy is the measure of the amount of starting materials that end up as useful products.
• the limiting reactant is the reactant that is completely used up first and therefore limits the amount of products formed.
• thermal decomposition is the reaction that occurs when heat is applied to a compound causing it to break down into its different chemical constituents.