Trevor Burridge wrote: > > 1 Ltr = 1 Kilo Phil Rushton responded:
> Well somebody has to be pedantic since you put out the challenge :-) > You didn't stipulate litres of *water*. Not exactly true even for water. As Wikipedia puts it: "One litre of water has a mass of almost exactly one kilogram (1 litre of chemically pure water has a mass of 1 kg at 277.13 K (3.98 °C or 39.164 °F), at which point the pure water occupies the minimum volume per mass). Similarly: 1 millilitre of water has about 1 g of mass; 1,000 litres of water has about 1,000 kg (1 tonne) of mass. This relationship is because the gram was originally defined as the mass of 1 mL of water. However, this definition was abandoned in 1964 because the density of water changes with pressure and the units of pressure are dependent on the definition of mass." David Mack
