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Element Y has two natural isotopes: Y-63 (62.940 amu) and Y-65 (64.928 amu) .Calculate the atomic mass of element Y given the abundance of Y-63 is 69.17%.
Thomas Nagel
An American philosopher known for his contributions to philosophy of mind, political philosophy, and ethics, particularly famous for the essay "What Is It Like to Be a Bat?".
Bat
A nocturnal, flying mammal, capable of echolocation, belonging to the order Chiroptera, known for their role in pollinating plants and controlling insect populations.
Understand
The ability to grasp the meaning, significance, or nature of something.
Aristophanes
An ancient Greek playwright and a master of comedy, known for his satirical plays critiquing social, political, and cultural issues of Athens.
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