How Much Does 30 Litres Weigh? Understanding Weight by Volume

Discover how to calculate the weight of 30 litres of various substances based on their density, including water and more.

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The weight of 30 litres of substance depends on its density. For water, 1 litre equals approximately 1 kilogram. Thus, 30 litres of water weigh about 30 kilograms. For substances with different densities, the weight can vary significantly.

FAQs & Answers

  1. How do you calculate the weight of a liquid from its volume? To calculate the weight, multiply the volume in litres by the density of the liquid (in kg per litre). Weight = Volume × Density.
  2. Why does the weight of 30 litres vary for different substances? Because every substance has a unique density, the same volume can weigh differently depending on the material's density.
  3. Is 30 litres of water heavier than 30 litres of oil? Yes, 30 litres of water weighs about 30 kilograms, while oil is less dense, so 30 litres of oil weighs less than 30 kilograms.