smartTrex smartTrex 02-11-2022 Chemistry Answered PPLLLLSSS HELPPPPPP Calculate the average atomic mass of lithium if 7/3 Li has a mass of 7.0160 amu and 6/3 Li has a mass of 6.0151 amu and 7/3 Li has a percent abundance of 92.5% and 6/3 Li has a percent abundance of 7.5%. Show your work.