D. A sample of iron was heated to 125.0 °C, then placed into 375.0 g of water initially at 19.8 °C. The final temperature of both was 25.6 °C. How many grams of iron were in the sample? (need Table 4.3)

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**Problem 20:**  
A sample of iron was heated to 125.0 °C, then placed into 375.0 g of water initially at 19.8 °C. The final temperature of both was 25.6 °C. How many grams of iron were in the sample? (need Table 4.3)

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**1.** The specific heat of a human is approximately 3.47 J/g·°C and normal body temperature is 37.0 °C.  

a. If a 165.0 lb person eats a candy bar containing 262.0 Cal, how much will their body temperature increase if all the calories from the candy bar are converted into heat energy? (hints: need to convert lbs to g, Cal to cal to J)  

b. If a 165.0 lb person eats candy containing 25.0 Cal, how much will their body temperature increase if all the calories from the candy are converted into heat energy?
Transcribed Image Text:**Problem 20:** A sample of iron was heated to 125.0 °C, then placed into 375.0 g of water initially at 19.8 °C. The final temperature of both was 25.6 °C. How many grams of iron were in the sample? (need Table 4.3) --- **1.** The specific heat of a human is approximately 3.47 J/g·°C and normal body temperature is 37.0 °C. a. If a 165.0 lb person eats a candy bar containing 262.0 Cal, how much will their body temperature increase if all the calories from the candy bar are converted into heat energy? (hints: need to convert lbs to g, Cal to cal to J) b. If a 165.0 lb person eats candy containing 25.0 Cal, how much will their body temperature increase if all the calories from the candy are converted into heat energy?
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