Does anyone know how the values in this helium measurement conversion table are derived?

The helium volume-conversion table you mentioned usually converts the volume of helium under standard conditions (in cubic meters or liters) into its mass (in kilograms or grams) based on density. The general method of derivation is as follows: 1. Determine the standard state: – Conversions are usually carried out under the standard state (0°C and 101.325 kPa, i.e., standard atmospheric pressure) or at other specified temperatures and pressures. 2. Determine the density of helium under standard conditions: At standard atmospheric pressure (101.325 kPa) and 0°C, the density of helium is approximately 0.1785 kg/m³ (or 0.1786 kg/m³, with a slight difference). 3. Calculate the conversion relationship: – Use the basic formula: Mass = Density × Volume – For example, the mass of 1 cubic meter of helium is 0.1785 kg ； - Conversely, to convert something such as mass into volume, use the formula: Volume = Mass ÷ Density. The values shown in the conversion table you see are calculated based on the aforementioned formula and the density of helium under standard conditions. .

Thank you! :handshake