An 80-G Aluminum Calorimeter Contains 380 G of Water at an Equilibrium

question 41

Multiple Choice

An 80-g aluminum calorimeter contains 380 g of water at an equilibrium temperature of 20°C. A 120-g piece of metal, initially at 352°C, is added to the calorimeter. The final temperature at equilibrium is 32°C. Assume there is no external heat exchange. The specific heats of aluminum and water are 910 J/kg·K and 4190 J/kg·K, respectively. The specific heat of the metal is closest to

• A) 520 J/kg ∙ K.
• B) 480 J/kg ∙ K.
• C) 390 J/kg ∙ K.
• D) 350 J/kg ∙ K.
• E) 560 J/kg ∙ K.

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Definitions:

Retained Earnings

The portion of net income that is not distributed to shareholders as dividends but retained by the company for reinvestment.

Total Assets

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