Question

How many milliliters are in $ 22.4L $ ?

Answer 1

Hint: The volume of liquids can be expressed in litres or millilitres. Where one litre is equal to $ 1000 $ millilitre. To convert the volume of liquids from litres to millilitres, multiply the given value of volume of liquids present in litres with the value of $ 1000 $ .

Complete answer:
Chemical compounds which are liquids will have volume and density. These both are related to each other. Density is the quantity that is given by the ratio of the mass of the substance and volume of a substance.
Volume of a substance is defined as the amount of space occupied by an object or substance that is enclosed within a container.
Volume can be expressed in different units like litres, millilitres, cubic centimetres, cubic metres, ounce, gallon, pint, quart, and barrel.
The litres and millilitres are the units of volume that can be converted from one to another.
Where one litre is equal to $ 1000 $ millilitre. Similar to the mass of the compound that can be expressed in kilograms and grams where one kilogram is equivalent to $ 1000 $ grams.
Given value is $ 22.4L $ means it was given in litres, to convert this value into millilitres, multiply the value with $ 1000 $ .
 $ 22.4L = 22.4 \times 1000 = 22400ml $
When $ 22.4L $ was converted into millilitres, it is equal to $ 22400ml $ .

Note:
Generally, there were different systems to express the units of any quantity or term. Similarly, volume has millilitres in the CGS system, and has litres in MKS system. Like that mass has kilograms in one system and grams in another system. The units in one system can be convertible from one to another.