Question

use the following information t o calculate the average atomic mass of an element. Two isotopes are known: Isotope A has a mass of 35.01 amu and isotope B has a mass of 37.01 amu. The relative abundance are 75.4% and 24.6% respectively. Which element do you think it is?

Answer 1

I think you have to multiply amu by percent abundance and sum the total.
35.01*.754+37.01*.246=35.502 which should be Chlorine.

Answer 2

i got that thank you