local_offer Engineering Physics Chemistry pressure temperature Alcohol Alcoholmeters Clausius-Clapeyron equation Life Mendeleev-Clapeyron equation Mendeleyev Thermodynamics alcohol solution altitude atmospheric pressure barometric pressure boiling boiling point concentration contraction density density of the alcohol ethanol ethyl alcohol glue height mass concentration mass fraction percent by volume percentage by weight sea level solute solution solvent spirit strength vodka volume concentration volume fraction volume percent