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There is no definite answer to this question, as 23 litres of any two substances will have different density, and therefore different mass. 23 litres of water would not have the same mass as 23 litres of crude oil, which would not have the same mass as 23 litres of sand. In order to find the mass of your 23 litres of some substance, you would need to know the density of the substance. Once the density (in kg/l) of the substance, you can find the mass of the substance, since you know you have 23 litres of it, using this formula:

Mass = Density*Volume

For example, at room temperature, water (H2O) has a density of 1kg/l. If you wish to find out the mass of 23 litres of water, you would employ the formula in this manner:

mass = (1)*(23)

mass = 23kg

Another example: Hydrogen peroxide (H2O2) has a density of 1.35 kg/l. The mass of 23 litres of Hydrogen peroxide would be found with:

m = (1.35)*(23)

m = 31.05kg

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16y ago

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