The density of helium gas at 25 degrees Celsius is approximately 0.1785 grams per liter.
The density of helium at room temperature and pressure is approximately 0.1785 grams per liter.
It depends on the metal. Lithium has lower density than water: 0.534 kg per liter. Copper is 8.94 kg per liter. Tungsten, which is now used as sinkers for fishing is 19.25 kg per liter. Osmium is the density champion at 22.59 kg per liter.
Helium-filled objects "float" in most substances that aren't primarily hydrogen or helium because of it's less dense. Helium has a weight of 0.1785 grams per liter. Nitrogen, on the other hand, which makes up 80% of the air we breathe, weighs 1.2506 grams per liter. Things that are lighter over the same surface area are more buoyant.However, helium isn't the lightest element. Hydrogen, weighing a mere 0.08988 grams per liter, is. The reason hydrogen isn't used as commonly as helium to fill things is because of the high flammability of hydrogen, with a small spark causing a hypothetical hydrogen balloon to explode.
Yes, all substances have density. Helium has a density of 0.1664 g/liter at 20°C and one atmosphere of pressure.
55,360 grams per liter.
Density is a measure of mass per unit volume, so it is often expressed in units such as grams per cubic centimeter or kilograms per liter. In the metric system, 1 liter of a substance will have a different mass depending on its density. Low density substances will have less mass in 1 liter compared to high density substances.
Gases normally have a density of a few grams per liter (i.e., per cubic decimeter), at most. Air, for example, has a density of about 1.2 grams per liter, at standard temperature and pressure. The standard SI unit for density would be kilogram per cubic meter (which actually happens to be equivalent to grams per liter!), but many people are still accustomed to specify the density per liter, not per cubic meter.
density is measured in grams per liter (g/L)
helium
As of September 2021, the current cost of liquid helium is approximately 4 per liter.
At a density of 1.73 kg per liter, there are approximately 7.59 pounds in one gallon. This can be calculated by converting the density to pounds per liter (1 kg = 2.20462 lbs) and then multiplying by the number of liters in a gallon (approximately 3.785).