A Fictional Element Has Two Isotopes,each Making Up 50% of the Population.Isotope

question 8

Multiple Choice

A fictional element has two isotopes,each making up 50% of the population.Isotope 1 has a mass of 80.0 amu,Isotope 2 has a mass of 85.0 amu.Calculate the atomic mass of the fictional element.

• A)82.5 amu
• B)42.5 amu
• C)40 amu
• D)165 amu
• E)none of the above

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Definitions:

Functional Groups

Specific groups of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.

Carboxylic Acid

Organic compounds containing a carboxyl group (-COOH), which acts as an acidic functional group.

Aldehyde

Organic compounds characterized by the presence of a carbonyl group (C=O) with at least one hydrogen atom attached to the carbon.

Ketone

A class of organic compounds characterized by a carbonyl group (C=O) bonded to two carbon atoms.