IOM 2017, Блиц — Задача 21

OLYMPIAD OF METROPOLISES. Moscow, September 4 · 4 септември 2017 г.

Условие

Natural chlorine contains two isotopes: chlorine-35 with the atomic mass of 34.97 Da and chlorine-37. The abundance of the former isotope is 75.78 at.%. The average atomic mass of chlorine is 35.45 Da. What is the atomic mass of chlorine-37?

1. 36.85 Da
2. 36.95 Da
3. 37.00 Da
4. 37.06 Da

Отговори

Решение

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Оригинал в Архива: blitz.pdf · официални решения: answers-blitz.pdf