You Discover a New Element Which Consists of Two Isotopes

question 88

Multiple Choice

You discover a new element which consists of two isotopes.  The first isotope, ²⁴³X (mass = 242.45 u)   comprises 40.000% of the total.  The second isotope, ²⁴⁸X (mass = 247.11 u) accounts for the rest.  What would be the average atomic mass for your new element?

• A)242.45 u
• B)244.32 u
• C)245.25
• D)247.11

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Definitions:

Engraving

A printmaking technique where an artist incises or cuts a design onto a hard surface, usually metal, to create a print.

Taian Teahouse

A notable teahouse in Japan, famous for its historical significance and traditional design that exemplifies Japanese tea ceremony architecture.

Myokian Temple

A historic Zen Buddhist temple known for its traditional Japanese tea room, located in Kyoto, Japan.

Momoyama

refers to the Momoyama period in Japan (1573–1615), characterized by luxurious castle architecture, vibrant screen painting, and the tea ceremony's development.