An Element Consists of Three Isotopes

question 44

Multiple Choice

An element consists of three isotopes.The abundance of one isotope is 92.21% and its atomic mass is 27.97693 u.The abundance of the second isotope is 4.70% and its atomic mass is 28.97649 u.The atomic mass of the third isotope is 29.97376 u.What is the atomic weight of the element?

• A) 28.09 u
• B) 28.98 u
• C) 28.96 u
• D) 29.87 u
• E) 29.07 u

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Definitions:

Precautionary Motive

The desire to hold cash or other liquid assets to meet unexpected needs and financial emergencies.

Financial Slack

The availability of excess funds or resources in a company that allows for flexibility in operations, strategic investments, or weathering financial uncertainties without immediate financial stress.

Keynes

Refers to John Maynard Keynes, a British economist whose ideas fundamentally changed the theory and practice of macroeconomics and economic policies of governments.

Transactions Reasons

The underlying motives or justifications for conducting financial transactions or business operations.