A hypothetical element consists of 3 isotopes
with the following masses and natural abundances.
Isotopic Natural
Mass Abundance
Number %
1 39 78.8
2 40 18.1
3 41 3.1
what is the atomic weight

Question

08-06-2015
Chemistry

contestada

A hypothetical element consists of 3 isotopes
with the following masses and natural abundances.
Isotopic Natural
Mass Abundance
Number %
1 39 78.8
2 40 18.1
3 41 3.1
what is the atomic weight

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seanjpowers1 seanjpowers1 · Answer 1 · 2015-06-08T04:52:08+02:00

To calculate the average atomic weight, each exact atomic weight is multiplied by its percent abundance (expressed as a decimal). Then, add the results together and round off to an appropriate number of significant figures

39 x .788 = 30.732
40 x .181 = 5.43
41 x .031 =+ 1.24
----------
39 since there are only 2 significant figures given for each mass

A hypothetical element consists of 3 isotopes with the following masses and natural abundances. Isotopic Natural Mass Abundance Number % 1 39 78.8 2 40 18.1 3 41 3.1 what is the atomic weight

Respuesta :

Otras preguntas

A hypothetical element consists of 3 isotopes
with the following masses and natural abundances.
Isotopic Natural
Mass Abundance
Number %
1 39 78.8
2 40 18.1
3 41 3.1
what is the atomic weight