An Element Found in Another Galaxy Exists as Two Isotopes

question 100

Multiple Choice

An element found in another galaxy exists as two isotopes.If 80.0 percent of the atoms have an atomic mass of 80.00 atomic mass units and the other 20.0 percent have an atomic mass of 82.00 atomic mass units,what is the atomic mass of the element?

• A)81.0 atomic mass units
• B)64.0 atomic mass units
• C)80.4 atomic mass units
• D)16.4 atomic mass units
• E)81.6 atomic mass units

---

Definitions:

Conducting

The act of leading or directing a group or an orchestra, ensuring all members perform in harmony.

Fulfilling Stakeholders' Expectations

The act of meeting or exceeding the hopes, needs, and requirements of those who have an interest or stake in the outcomes of a business or project.

Data-Collection Phase

A stage in research or investigation that involves gathering relevant data to address specific questions or hypotheses.

Ethics Audit

A systematic evaluation of an organization's ethical programs and practices, aimed at identifying potential issues and improving ethical standards.