Answer:
Average atomic mass = 32 amu
Explanation:
Given data:
Abundance of X-30.00 amu = 30%
Abundance of X-32.00 amu = 50%
Abundance of X-35.00 amu = 20%
Average atomic mass = ?
Solution:
Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) +(abundance of 3rd isotope × its atomic mass) / 100
Average atomic mass = (30×30)+(50×32)+(20×35) /100
Average atomic mass = 900 + 1600 +700 / 100
Average atomic mass = 3200 / 100
Average atomic mass = 32 amu.
