Question

Find average atomic mass of cl if it has 75% of cl 35 and 25% of cl 34

Answer 1

Answer:

34.75%

Explanation:

Average atomic mass= MASS OF 1ST ISOTOPE*PERCENTAGE ABUNDANCE+ MASS OF 2ND ISOTOPE*PERCENTAGE ABUNDANCE/ 100%

35*75+25*34/100= 2625+850/100

                            =34.75%