Two Naturally Occurring Isotopes Exist for the Hypothetical Element Dippium

question 4

Multiple Choice

Two naturally occurring isotopes exist for the hypothetical element dippium. 25.0 percent of dippium atoms have a relative mass of 17.0 amu and 75.0 percent a relative mass of 21.3 amu. What is the atomic mass of dippium?

• A) 18.1 amu
• B) 19.1 amu
• C) 20.2 amu
• D) 38.3 amu

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Definitions:

Time Sampling

A data collection method in research where observations are made at specific intervals over a designated period.

Anecdotal Recording

A qualitative method of data collection where individual instances or occurrences are described in detail, often used in behavioral research to capture complex phenomena.

Interval Recording

A behavior recording technique that measures the occurrence or nonoccurrence of behavior within specified time intervals. The total observation time is divided into equal intervals, and the observer records whether the behavior occurs during those intervals.

Frequency Recording

A method of data collection in behavioral analysis that involves counting the number of times a specific behavior occurs within a set period.