A Sample of Sodium Hydroxide Dissolves in Water,releasing Heat to the Surrounding

question 19

Multiple Choice

A sample of sodium hydroxide dissolves in water,releasing heat to the surrounding water and causing the temperature to rise by 20 °C.If the heat change for the reaction is -300 J,what is the heat change for the surrounding water?

• A) 6,000 J·°C
• B) - 20 °C
• C) -300 J
• D) +300 J

---

Definitions:

Lifespan

Pertains to the length of time an individual lives, from birth to death.

Senescence

The natural physical decline brought about by increasing age.

Physical Decline

The gradual reduction in physical abilities and functions as part of the aging process or due to illness.

Puberty

The developmental stage in which an individual matures sexually and reaches reproductive capability.