The Same Activity Is Measured for Two Different Isotope Samples

question 19

Multiple Choice

The same activity is measured for two different isotope samples.One sample contains 0.0450 kg of (atomic mass = 230.033 937 u, t_1/2 = 20.8 days) .The second sample contains an unknown amount of (atomic mass = 231.036 264 u, t_1/2 = 4.3 days) .What is the mass of the second sample?

• A)0.0093 kg
• B)0.23 kg
• C)0.110 kg
• D)0.037 kg
• E)0.0450 kg

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Definitions:

Albert Bandura

A psychologist famous for his work on social learning theory and the concept of self-efficacy.

Observable Behavior

Actions or reactions of an individual that can be directly noticed and measured by others, excluding internal processes not visible externally.

Future Self

The conception of oneself in the future, encompassing hopes, fears, goals, and potential changes over time.

Self-control

The skill to control emotions, thinking, and conduct in scenarios involving temptations and instinctive urges.