If 10 Gram of an Isotope Has a Half-Life of 15

question 55

Multiple Choice

If 1.0 gram of an isotope has a half-life of 15 hours,the half-life of a 0.50 gram sample of the same isotope is ________.

• A)60 hours
• B)30 hours
• C)7.5 hours
• D)15 hours
• E)3.75 hours

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Definitions:

Brain Areas

These are specific regions within the brain each responsible for different functions such as processing sensory information, controlling motor skills, or facilitating cognitive processes.

Overarousal

A condition of excessive psychological and physiological tension, often leading to anxiety, restlessness, or inability to sleep.

Neurotransmitter

Chemical messengers that transmit signals across the synaptic gap between neurons, influencing various bodily functions.

Alarm Centers

Brain regions responsible for processing threats and initiating the body's stress response, often involving the amygdala and hypothalamus.