mass of each isotope and number of each isotope was needed to be measured, and the rest could be calculated based on the data.
15jl03
Typewriter
I got 0.16 for the total column of row 3.
15jl03
Typewriter
percent abundance of each isotope divided by 100 is equal to relative abundance of each isotope.
15jl03
Typewriter
The total percentage is really close or equal to 100% and the total relative abundance is also really close or equal to 1.
15jl03
Typewriter
Elly Lee
15jl03
Typewriter
10A
15jl03
Typewriter
Elly Lee
15jl03
Typewriter
10A
15jl03
Typewriter
The relative abundance tells you how much of a particular isotope is present in a single particle. Relative abundance uses the numeral 1 to represent the entire sample, and amounts relative to 1 are represented a decimal values in this case.
15jl03
Typewriter
relative weight is average mass of each isotopes multiplied by relative abundance of each isotope. the total values for steps 3 and 6 are the same. (both 0.16 in my table)
15jl03
Typewriter
The reason is that row 3 was calculated only with the data of mass of each isotope and number of them. The atomic mass should be calculated with data of atomic weight of an atom multiplied by the abundance of each isotope.
15jl03
Typewriter
The larger the samples are, the closer the average would be. The difference would be smaller and the data would be more accurate.
