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Alchen [17]
3 years ago
7

Help me with this please

Chemistry
1 answer:
Pavel [41]3 years ago
8 0
I believe it’s D because they are the largest decimals
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There are two isotopes of an unknown element, X-19 and X-21. The abundance of X-19 is 14.55%. A weighted average uses the percen
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Answer:

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Explanation:

The average molar mass is defined as the sum of the molar mass of each isotope times its abundance. For the unknown element X that has 2 isotopes the weighted average is defined as:

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A potential energy diagram is shown.
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