Input interpretation
period 1 elements | density
Results
hydrogen | 8.99×10^-5 g/cm^3 (grams per cubic centimeter) helium | 1.785×10^-4 g/cm^3 (grams per cubic centimeter)
period 1 elements | density | 1.34×10^-4 g/cm^3 (grams per cubic centimeter) (median)
Relative values
| visual | ratios | | comparisons hydrogen | | 0.504 | 1 | 49.6% smaller helium | | 1 | 1.99 | 99% larger
Unit conversions for median density 1.34×10^-4 g/cm^3
134 g/m^3 (grams per cubic meter)
0.134 kg/m^3 (kilograms per cubic meter)
0.134 g/L (grams per liter)
Comparisons for median density 1.34×10^-4 g/cm^3
≈ ( 0.007 ≈ 1/150 ) × mean density inside the Schwarzschild radius of a supermassive black hole ( ≈ 20 kg/m^3 )
≈ ( 0.11 ≈ 1/9 ) × International Standard Atmosphere air density at 15 °C ( ≈ 1.2 kg/m^3 )