the density of a gas relative to the density of hydrogen
At standard temperature and pressure, water has much the highest density, because it is a liquid and the other two are nearly ideal gases.
This is the determination of the specific density (the ratio liquid density/water density).
liquid hydrogen is cheaper than liquid oxygen
If the density of the solid body is greater than the density of the liquid the bodywill sink. If the density of the liquid is greater than the density of the solid thebody will float.If the solid and the liquid have the same density, the solid body can be any whereinside the liquid and may move following currents if they exist in the liquid.Read more:How_does_the_density_of_a_body_and_that_of_a_liquid_determine_that_whether_the_body_will_float_or_sink_into_that_liquid
I suppose that this liquid is the liquefied atomic hydrogen at 20 K: 0,07099 g/cm3.
Gaseous hydrogen has a density of 0.08988 g/cm. Liquid and solid hydrogen have a density of about 0.07 g/ccAt standard temperature and pressure (stp), hydrogen as a gas has density 0.08988 grams per litre. Hydrogen atoms have atomic mass of 1, and diatomic hydrogen molecules have molecular mass of 2. From this we can tell that hydrogen is the lightest (least dense) element in the periodic table.
the density of a gas relative to the density of hydrogen
Gas turns to liquid when energy is lost. The density of a gas is much less that the density of a liquid. Thus, when energy is lost and the particles of the gas are able to condense, it becomes a liquid.
The solid element that has the lowest density is lithium. Its density is 0.534 grams per cubic centimeters. Lithium is a metal, and it does not occur freely in nature.
Estimated at about 0.7 g/cm3 because of the large amount of hydrogen which, due to temp and pressure is liquid.
Hydrogen because it has one electron in one energy level and is needed to make water (essential liquid).
At standard temperature and pressure, water has much the highest density, because it is a liquid and the other two are nearly ideal gases.
Pressure energy per unit volume is equal to the pressure and per unit mass is equal to the density of the liquid. When an incompressible liquid flows out of a tank in which the pressure is maintained , the liquid under pressure possesses potential energy.
as electricity. If hydrogen fuel cell cars make it may be delivered at your filling station as liquid hydrogen.
You can only refer to the Kinetic Energy of the Gas Molecules in this manner, not the entire Volume of the Gas as an Object. To become a Gas Hydrogen must increase its Thermal Energy to the point that it goes from Liquid State to Gaseous State. This increase in Thermal Energy causes and increase in the Motion of the Hydrogen Molecules...increasing their Kinetic Energy. If cooled to Absolute Zero Temperature their KE goes to Zero and Molecular motion Stops.
That depends on the liquid and the solid. Liquid mercury has a very high density. Liquid gasoline has a very low density. At the melting point the density of a liquid and a solid are almost the same.