Is 300 mL the Same as 300g? Understanding Volume vs. Mass

Learn why 300 mL is not the same as 300g and how density affects the conversion between volume and weight.

910 views

No, 300 mL is not the same as 300g. While 1 mL of water at its densest (approximately 4° C) equals 1 gram, this equivalence does not hold for substances with different densities than water. The weight of 300 mL of a substance depends on its density, so 300 mL of something other than water may weigh more or less than 300 grams.

FAQs & Answers

  1. Can you directly convert milliliters to grams? No, milliliters measure volume whereas grams measure mass, so you can only convert between them if you know the substance's density.
  2. Why does 1 mL of water equal 1 gram? Water has a density of approximately 1 gram per milliliter at 4°C, making its volume and mass numerically equal under these conditions.
  3. How does density affect weight and volume measurements? Density determines how much mass is contained in a given volume, so substances with different densities will weigh more or less than the same volume of water.