Cerium Has Four Stable Isotopes Listed Below

question 152

Multiple Choice

Cerium has four stable isotopes listed below. If the weighted average atomic mass of cerium is 140.116 amu, calculate the atomic mass of cerium-142.
Ce-136 135.90714 amu 0.19%
Ce-138 137.90599 amu 0.25%
Ce-140 139.90543 amu 88.43%
Ce-142 11.13%

• A)141.911 amu
• B)142.341 amu
• C)142.000 amu
• D)141.556 amu
• E)142.911 amu

Understand the benefits of massage therapy and other relaxation techniques on mental health.

Grasp the significance of subjective well-being and factors contributing to it.

Appreciate the role of a positive social ecology in enhancing well-being.

Understand and apply hypothesis testing for normal distribution.

---

Definitions:

Consolidated Sales

The total sales of a parent company and its subsidiaries, after eliminating intercompany sales, presented as a single sales figure for the entire company group.

Intra-entity Transfers

Transactions of goods, services, or funds between units of the same company, often requiring elimination adjustments during consolidation.

Straight-Line Method

A method of calculating depreciation and amortization, dividing the difference between an asset's cost and its salvage value by the number of years it is expected to be used.