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(Micrograms per litre)/(gram molecular weight of solute) = (micromoles per litre).
1000ppm = 1000mg per litre. this means 1g made up to a litre of solution.
Litres is a measure of volume - the size in space, while oz measure mass and weight. Water has a mass of 1 kg per litre.
If you know how many km's you can travel per each litre of petrol, you can divide 580km's by km's per litre and then multiply by 2.50.
You need liquid density ( kg per litre ) > Some example densities ( kg per litre) Water = 1.0 Petrol = 0.737 Beer = 1.01 Kerosene = 0.82 Paraffin = 0.8 > 1 US gallon = 3.7854 litres, then * density of liquid ( kg per litre ) = kgs or: 1 UK gallon = 4.5461 litres, then * density of liquid ( kg per litre ) = kgs