An Atom of Helium Has a Mass About Four Times

question 80

Multiple Choice

An atom of helium has a mass about four times greater than that of an atom of hydrogen.Which choice makes the correct comparison of the relative numbers of helium and hydrogen atoms in equal masses of the two elements?

• A)There are about four times as many helium atoms as hydrogen atoms.
• B)There are about two times as many helium atoms as hydrogen atoms.
• C)The number of helium and hydrogen atoms is the same.
• D)There are about half as many helium atoms as hydrogen atoms.
• E)There are about one-fourth as many helium atoms as hydrogen atoms.

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Base Year

A reference year used for comparative financial analysis, serving as a benchmark for evaluating changes over time.

Sales

The activities involved in selling goods or services in return for money or other compensation.

Trend Percentages

An analytical tool used to examine changes in financial statements items over various periods, expressing each item as a percentage of its value in the base year.

Base Period

A specific time period used as a standard of comparison for financial or economic data.