Question

PLS HELP!!!( pls be 100% of your answer)Chlorine is made up of two isotopes. 35Chlorine makes up 75.8% of chlorine and 37Chlorine makes up 24.4%. What is the average atomic mass for chlorine? (assume chlorine-35 has a weight of 35 amu and chlorine-37 has a mass of 37 amu)

37.000 amu
35.000 amu
35.558 amu
34.969 amu

Answer 1

35.558 amu

Step-by-step explanation:

Complete this calculation

`(isotope * \: abundance)/(100) + (isotope * \: abundance)/(100)`

`(35 * 75.8)/(100) + (37 * 24.4)/(100) = 35.558`

Therefore the answer is 35.558 amu