Rubidium Has Two Naturally Occurring Isotopes, ⁸⁵Rb (84

question 102

Multiple Choice

Rubidium has two naturally occurring isotopes, ⁸⁵Rb (84.912 amu) and ⁸⁷Rb (86.909 amu) .Rubidium-85 is the more abundant isotope (72.17%) .Calculate the average atomic mass of Rb.

• A)86.91 amu
• B)85.47 amu
• C)85.91 amu
• D)86.35 amu
• E)86.00 amu

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Definitions:

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Emotional labour refers to the process of managing one's feelings and expressions based on the emotional requirements of a job, often involving the suppression or induction of certain emotions.

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The earnings given to an individual by an employer or client in return for their work or services, often specified as an hourly wage or salary.

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Feelings that are generally uplifting and pleasant, such as joy, gratitude, serenity, interest, hope, pride, amusement, inspiration, awe, and love.

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The perceived fairness of the communication processes and interpersonal interactions by which organizational decisions are implemented and conveyed.