What is the density of krypton gas at STP?

1 Answer
Meave60
Dec 3, 2015

The density of krypton at STP is "3.74 kg/m"^3"3.74 kg/m3, or "0.00374 g/cm"^3"0.00374 g/cm3 at STP of 0^"o""C"0oC ("273.15 K")(273.15 K) and "1 atm"1 atm.
http://www.engineeringtoolbox.com/gas-density-d_158.html
The calculated density is "0.0037386 g/cm"^3"0.0037386 g/cm3.

Explanation:

How to Calculate Density of Krypton from Molar Mass and Molar Volume.

Molar mass ("MM")(MM) is the atomic weight of an element on the periodic table in g/mol.

"MM"_"Kr"="83.798 g/mol"MMKr=83.798 g/mol
http://www.nist.gov/pml/data/periodic.cfm

Molar Volume (V_"m")(Vm) at STP is "22.414 L/mol"22.414 L/mol
https://en.wikipedia.org/wiki/Molar_volume

"Density"=("MM")/(V_"m")Density=MMVm

"Density"_"Kr"=(83.798 "g"/cancel"mol")/(22.414"L"/cancel"mol")="3.7386 g/L"

(3.7386"g")/(1"L")xx(1"L")/(1000"mL")="0.0037386 g/mL"="0.0037386 g/cm"^3" ("1mL=1cm"^3")

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