Hydrogen Helium Table



  1. Hydrogen Helium Periodic Table
  2. Hydrogen Helium Lithium Table
  3. Hydrogen Vs Helium
  4. Helium Vs Hydrogen Balloon

Chemical, Physical and Thermal Properties of Helium - He

Chemical, physical and thermal properties of Helium - He :
(values at 25oC (77oF, 298 K) and atmospheric pressure)

Element
Molecular Weight4.0026
Specific Gravity, air = 10.138
Specific Volume (ft3/lb, m3/kg)97.86, 6.11
Density of liquid at atmospheric pressure (lb/ft3, kg/m3)7.80, 125
Absolute Viscosity (lbm/ft s, centipoises)13.4 10-6, 0.02
Sound velocity in gas (m/s)1015
Specific Heat - cp - (Btu/lboF or cal/goC, J/kgK)1.24, 5188
Specific Heat Ratio - cp/cv1.66
Gas constant - R - (ft lb/lboR, J/kgoC)386, 2077
Thermal Conductivity (Btu/hr ft oF, W/moC)0.086, 0.149
Boiling Point - saturation pressure 14.7 psia and 760 mm Hg - (oF, oK)-452, 4.22
Latent Heat of Evaporation at boiling point (Btu/lb, J/kg)10.0, 23300
Critical Temperature (oF, oK)-450.3, 5.2
Critical Pressure (psia, MN/m2)33.22, -
Critical Volume (ft3/lb, m3/kg)0.231, 0.0144
Flammableno

Follow the links below to get values for the listed properties of helium at varying pressure and temperature:

See also more about atmospheric pressure, and STP - Standard Temperature and Pressure & NTP - Normal Temperature and Pressure,
as well as Thermophysical properties of: Acetone, Acetylene, Air, Ammonia, Argon, Benzene, Butane, Carbon dioxide, Carbon monoxide, Ethane, Ethanol, Ethylene, Hydrogen, Hydrogen sulfide, Methane, Methanol, Nitrogen, Oxygen, Pentane, Propane, Toluene, Water and Heavy water, D2O.

Related Topics

590 Oxygen Nitrogen or helium 350 Propane. Nitrogen or helium 660 Sulfur Dioxide Air or nitrogen 590 Sulfur Hexafluoride Argon, helium or Nitrogen 350 Sulfur Hexafluoride Hydrogen 350 Tritium Argon, carbon dioxide, hydrogen, methane, neon, nitrogen, krypton, or xenon CGA Selection Charts Reference Tables Pure Gases CGA Selection Chart for Fittings. Gas Facts includes charts and tables and interactive conversion formulas related to the chemical and physical properties of our cryogenic liquid and compressed gas products, as well as an online tool for estimating the cost of using nitrogen, oxygen, or argon. The first element in the periodic table with more than one electron is helium, which has two electrons. Dot-density diagrams for both these electrons are shown below. One electron is color coded in blue, and the other in green. Note that both electrons occupy the same orbital, namely, a 1s orbital. It turns out that 2 is the maximum. The values in Table 2 were calculated using Henry’s law. For example the concentration of hydrogen gas (H 2) using Henry’s law was obtained by dividing P (which in this case is 1 atm) by K H to get the concentration (C). Table 1 shows that the K H for hydrogen gas is 1282.05.

  • Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more

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Hydrogen Helium Table

Here are a collection of mnemonic sentences supplied by Neville Holmes (6/00) of Australia for the elements in the first four periods of the chemical Periodic Table.

Period 1-2 (Elements 1-10):
Happy Henry Lithely Began Baking Cakes, Not Omitting Four Necessities

(hydrogen. helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon)

Period 2-3: (Elements 11-18):
Naval Magistrates Always Signal Per Siren, Claiming Adequacy(sodium, magnesium, aluminium, silicon, phosphorus, sulphur, chlorine, argon)

Period 3-4:
(Elements 19-27):Kindly Cannibals Scare Timid Visitors, Cruelly Menacing Feeble Communist(potassium, calcium, scandium, titanium, vanadium, chromium, manganese, iron, cobalt)

(Elements 28-36):NiTablets

Hydrogen Helium Periodic Table

twits Cuddling Zany GaHeliumbbling Geese

Hydrogen Helium Lithium Table

Astride

Hydrogen Vs Helium

Se

Helium Vs Hydrogen Balloon

veral British Kangaroos(nickel, copper, zinc, gallium, germanium, arsenic, selenium, bromine, krypton)

All matter consists of atoms of one or another element such as hydrogen (H) or oxygen (O), often combined into compounds (as in H2O=water). The elements are set in a Periodic Table in the order of their atomic weights (starting with hydrogen, the lightest) following Mendeleev's Periodic Law, which states that 'the properties of the elements are in periodic dependence upon their atomic weights' - in other words, elements either eight or ten places apart have many properties in common. See rare earths for the order of rare earth elements and rare gases for a mnemonic sentence governing the order of rare gases. For those completely unfamiliar with the Periodic Table itself, it is reproduced below in full.