Question

an element xhas two isotopes of masses 59.74u and 61.982u. if their abundance is 40% and 60% respectively cl cilate average atomic mass in u and kg

Answer 1

Av atomic mass=

at mass*x+another at mass *(100-x)/100

So ab at mass=59.7*60+61.9*40/100

=3582+2476/100

=6058/100

=60.58