calories.
Gas can be measured by volume (in litres), by mass (in grams/kilograms etc or, in chemistry a mole).
Mass can be measured in kilograms. Kilogram is the basic unit of mass in the International System of Units (SI).
Kilograms can't be converted to liters. Kilograms measure mass, while liters measure volume.
Liters can't be converted to kilograms. Liters measure volume, while kilograms measure mass.
Meters measure length, liters measure capacity, and kilograms measure weight.
kilograms
1 liters is 1000 grams
Gases are not measured by linear measures such as feet or meters - they are measured either by mass (pounds, kilograms), or by volume (liters, cubic feet). In the case of a volume, you must also know the pressure.
30 Liters of water weighs 30 kilograms. Other substances have different densities and weights.
liters
3 liters of water weighs 3000 grams or 3 kilograms
Kilograms