Question about Atoms: Atomic Mass Unit
Subject Chemistry
Chemistry
Source Originais Teachy
Originais Teachy
Topic Atoms: Atomic Mass Unit
Atoms: Atomic Mass Unit
Difficulty Hard
Hard
(Originais Teachy 2023) - Question Hard of Chemistry
An astronomer found a new chemical element in a comet, and he named it Cometium (Ct). In his analysis, he discovered that Cometium is composed of three different isotopes with atomic masses of 178 u, 180 u, and 182 u. The isotopic percentages of the three isotopes are 35%, 45%, and 20% respectively. Based on this information, calculate the average atomic mass of Cometium (Ct).a.
181.6 u
b.
179.8 u
c.
182.3 u
d.
180.2 u
e.
178.5 u
Answer sheet:
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Answer sheet
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