I am trying to use the element properties Maple has in its ScientificConstants package. I am running into problems with the density of gaseous elements:
Units:-UsingSystem(); # returns SI as expected
GetValue(Element('Si',density)); # returns 2329.0000 [kg/m^3] which is 2.329 g/cm^3, which is correct
GetValue(Element('H',density(gas))); # returns 88 [kg/m^3], which is incorrect.
PDG gives the density of hydrogen as 8.376E-5 g/cm^3, which is 0.08376 kg/m^3.
Even more crazy for Krypton:
GetValue(Element('Kr',density(gas))); # returns 3677.000 [kg/m^3]. Heavy little buggers, these Kypton atoms! Should be 3.486 in the same units.
What gives? Am I missing something here?