How many tons is 50000 litres?

Answer 1

A tonne is a measure of mass. A litre is a measure of volume. The two measure different things and, according to basic principles of dimensional analysis, conversion from one to the other is not valid.

If you are not convinced, consider a litre of air. How many tonnes? Next consider a litre of lead. How many tonnes?

Some people still believe that there is a conversion in relation to water but that is only approximately true. Until 1964 a litre was defined as the volume of one kilogram of pure water at 4 deg Celsius and at a pressure of 760 millilitres of Mercury. With that definition 250 grams of water (under those conditions) would have occupied 250 ml. But that definition of a litre was abandoned in favour of 1 litre =1000 cubic centimetres.