Calcium-39 Undergoes Positron Decay

question 35

Multiple Choice

Calcium-39 undergoes positron decay. Each positron carries 5.49 MeV of energy. How much energy will be emitted when 0.0025 mol of calcium-39 decays?

• A) 13.2 kJ
• B) 1.32 * 10⁴ kJ
• C) 1.32 *10⁶ kJ
• D) 1.32 * 10⁹ kJ
• E) None of these choices is correct.

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Definitions:

Cannabis Dependence

A condition characterized by a compulsive need to use cannabis despite negative consequences to health, personal life, or social functioning.

ICD-10-CM Code

The International Classification of Diseases, 10th Revision, Clinical Modification; a system used by healthcare providers to classify and code all diagnoses, symptoms, and procedures.

Cannabis Abuse

The pattern of cannabis use causing significant impairment or distress, including health problems and failure to meet major responsibilities at work, school, or home.

ICD-10-CM

The International Classification of Diseases, Tenth Revision, Clinical Modification; a system used worldwide for coding diagnoses, signs, symptoms, and procedures.