Question

Use data given in the following table to calculate the molar mass of naturaly occuring argo isotopes:
`{:("Isotope",,"Isotopic molar mass",,"Abundance"),(.^(36)Ar,,35.96755 g mol^(-1),,0.337%),(.^(38)Ar,,37.96272 g mol^(-1),,0.063%),(.^(40)Ar,,39.9624 g mol^(-1),,99.600%):}`

Answer 1

Molar mass of `Ar=35.96755xx0.00337+37.96272xx0.00063+39.96924xx0.99600`
`=39.948 g mol^(-1)`