Water is used in hot water bags because
Water is used in hot water bags because its specific heat is high, meaning it can absorb and retain a significant amount of heat. This property allows hot water bags to maintain their temperature for extended periods, providing effective warmth therapy.
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The correct answer is option C. Water is used in hot water bags because of its high specific heat capacity. This means it can absorb and retain a large amount of heat, making it effective for providing warmth when used in hot water bags. Options A, B, and D are not the primary reasons for choosing water; rather, it’s the specific heat capacity that makes it suitable for this purpose. Water’s availability, affordability, and ease of heating may be secondary factors, but the main reason is its high specific heat, allowing it to store and release heat effectively for therapeutic use in hot water bags. Therefore, option C best explains why water is commonly used in hot water bags.