basic chemical quantities

• moles = mass/molar mass
• moles = (volume x concentration) / 1000
• volume = moles x molar volume
  • at room temperature and pressure, molar volume is 24dm^3
• number of entities = moles x 6.023x10^23 {this is the Avogadro constant}
• concentration = mass of solute / volume of solution
• concentration = moles of solute / volume of solution
• % yield = (actual yield / theoretical yield) x 100
• atom economy = (mass of atoms in product / mass of atoms in all reactants) x 100

energetics

• E = mcΔT
• ΔH = energy / moles