He
Helium
Z 2 4.003 g/molNoble Gas
Phase
Temperature
273.2 K(0.0 °C32.0 °F)
Pressure
101,325 Pa(1 atm1.013 bar760 mmHg)
Density (STP)
0.0001785 g/cm³
Current Phase
Gas
Melting Point
---
Boiling Point
4.22 K (-268.9 °C-452.1 °F)
Critical Point
5.2 K (-268.0 °C-450.3 °F)228,320 Pa (2.253 atm2.283 bar1,713 mmHg)
Heating Curve
Added Heat
0.0kJ/moleV
Current Phase
Liquid
Temperature
0.0 K(-273.1 °C-459.7 °F)
Heat of Fusion
0.0138 kJ/mol0.000143 eV
Heat of Vaporization
0.0829 kJ/mol0.000859 eV
Specific Heat
5.1931 J/(g·K)
Thermal Conductivity
0.1513 W/(m·K)