Concentration units

Units that support prefixes are shown in bold.

Unit Name, System Units Students Enter Infix You Code Notes

Henry’s law constant units

SI

mol*(L*atm)^(-1) mol*(L*atm)^(-1)  

molal (molality)

SI

m

mol*kg^(-1)

molal

mol*kg^(-1)

You must code concentration as molal so it is not confused with m for meter. Avoid coding in base units.

molarity

SI

M

mol/L

mol*m^(-3)

M

mol/L

mol*m^(-3)

Code chemical concentration in M unless you specifically need mol/L. Avoid coding in base units (mol/m^3).

mole

SI

mol

mole

moles

mol For student input, mol, mole, and moles are considered acceptable alternate spellings, but you should code answers using the infix mol.

parts per billion

SI

ppb ppb  

parts per million

SI

ppm ppm  

 

See also:

Supported prefixes and units