# What is the density of STP?

One mole of a gas at STP has a volume of 22.4 L.
So if we have the molar mass of the gas , just divide it by 22.4 to get the density of that gas. Eg: molar mass of O2 gas = 32 g/mol.
Density = mass/volume.
A.

### What is the density of helium at STP?

1) molar mass of He = 4g volume occupies by 1 mole of He at STP = 22.4 litres therefore density at STP = 4/22.4 = 0.1786 g/L 2) moles of O2 = 16/32 = 0.5
• #### What is the density of helium?

Chemical properties of helium - Health effects of helium
Atomic number2
Atomic mass4.00260 g.mol -1
Electronegativity according to Paulingunknown
Density0.178*10 -3 g.cm -3 at 20 °C
Melting point- 272.2 (26 atm) °C
• #### What is the density of h2?

Hydrogen
General properties
Phase at STPgas
Melting point13.99 K ?(−259.16 °C, ?−434.49 °F)
Boiling point20.271 K ?(−252.879 °C, ?−423.182 °F)
Density (at STP)0.08988 g/L
• #### What is the density of the gas?

The official IUPAC unit for gas density is kg/m3 (not g/L). However, it turns out that one kg/m3 equals one g/L. Here is a brief video explaining the conversion. One place teachers like to bring gas density into play is when you calculate a molar mass of a gas using PV = nRT.
B.

### What is the density of sulfur hexafluoride at STP?

What is the density at STP of the gas sulfur hexafluoride, SF6.
6.52 g/L.
What is the molar mass of (NH4)2CO3.
96 g.
• #### What is the density of sulfur hexafluoride at STP?

What is the density at STP of the gas sulfur hexafluoride, SF6.
6.52 g/L.
What is the molar mass of (NH4)2CO3.
96 g.
• #### What is the molar mass of sulfur hexafluoride gas?

Sulfur hexafluoride
Names
Molar mass146.06 g/mol
AppearanceColorless gas
Odorodorless
Density6.17 g/L
• #### What information do you need to calculate the percentage composition of a compound?

The percent composition of a compound is calculated with the molecular formula: divide the mass of each element found in one mole of the compound by the total molar mass of the compound.
C.

### What is the density of argon gas at STP?

Gas densities at STP
GasMolar Mass (g/mole)Density at STP (g/L)
CH4, methane gas16.0430.714
CO2, carbon dioxide44.0091.96
H2, hydrogen gas2.0150.090
Ar, argon gas39.9481.78
• #### What is the density of argon gas at STP?

Gas densities at STP
GasMolar Mass (g/mole)Density at STP (g/L)
CH4, methane gas16.0430.714
CO2, carbon dioxide44.0091.96
H2, hydrogen gas2.0150.090
Ar, argon gas39.9481.78
• #### Is propane gas lighter than air?

Propane (also called liquefied petroleum gas (LPG), or LP gas) is typically transported and stored as a very cold liquid, and can cause a “freeze burn” or frostbite if it contacts the skin. Propane vapors are heavier than air, while natural gas is lighter than air.
• #### What is the density of oxygen gas at?

1.428 g/l

Updated: 2nd October 2019