Problem- Silicon has three naturally occurring isotopes(Si-28, Si-29, and Si-30). The atomic mass and natural abundance of Si-28 are 27.9769 amuand 92.2 %, respectively. The atomic mass and natural abundance of Si-29 are 28.9765 amuand 4.67 %, respectively.
Part A
Find the natural abundance of Si-30.
Express your answer using two significant figures.
Part B
Find the atomic mass of Si-30.
I need help for above question. Show each steps for the above problem.