Oxygen Has an Atomic Number of 8 and a Mass

question 71

Multiple Choice

Oxygen has an atomic number of 8 and a mass number of 16. Thus, the atomic mass of an oxygen atom is

• A)exactly 8 grams.
• B)exactly 8 daltons.
• C)approximately 16 grams.
• D)approximately 16 daltons.
• E)24 amu (atomic mass units).

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Definitions:

Freshmen

Students in their first year of study in a secondary or post-secondary educational institution.

Significant Change

A measurable difference in data or results that surpasses the threshold of statistical significance, indicating that it is unlikely to have occurred by chance.

Expected Number

The value predicted for a random variable, taking into account all possible values it can take weighted by their respective probability of occurrence.

Test Statistic

A calculated value from sample data used to decide whether to reject the null hypothesis in statistical hypothesis testing.