The Ratio of Carbon-13 to Carbon-12 in a Sample of Material

question 3

Multiple Choice

The ratio of carbon-13 to carbon-12 in a sample of material from a C₃ plant is 122:10,000. The same ratio for the reference standard is 125:10,000. Delta (δ) is thus _______ per thousand.

• A) ‒24
• B) ‒3
• C) 3
• D) 24

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Definitions:

Depressive Disorders

A group of conditions characterized by persistent feelings of sadness, hopelessness, and a lack of interest or pleasure in activities.

Neurotransmitters

Chemical messengers that transmit signals across the synaptic gaps between neurons, influencing a vast range of bodily and psychological functions.

Pessimistic Explanatory Style

A tendency to explain negative events as due to stable, global, and internal causes.

Schizophrenic Disorder

A mental health condition characterized by disruptions in thought processes, perceptions, emotional responsiveness, and social interactions.