Answer:
The answer to your question is 49.08 u
Explanation:
Data
Average atomic mass = 45.737 u
Isotope 1 = 40.149 u abundance = 37.46%
Isotope 2 = ?
Process
1.- Calculate the abundance of isotope 2
abundance isotope 1 + abundance isotope 2 = 100%
37.46 + abundance isotope 2 = 100
abundance isotope 2 = 100 - 37.46
abundance isotope 2 = 62.54
2.- Calculate the mass of isotope 2
Average atomic mass = (abundance x mass isotope 1) + (abundance x
mass isotope 2)
45.737 = (0.3746 x 40.149) + (62.54 x mass isotope 2)
mass isotope 2 = [45.737 - (0.3746 x 40.149)]/ 62.54
mass isotope 2 = [45.737 - 15.0398]/ 62.54
mass isotope 2 = 30.6972/62.54
mass isotope 2 = 0.4908 x 100
mass isotope 2 = 49.08 u
