A Lab Assistant Drops a 400

question 7

Multiple Choice

A lab assistant drops a 400.0-g piece of metal at 100.0°C into a 100.0-g aluminum cup containing 500.0 g of water at
In a few minutes,she measures the final temperature of the system to be 40.0°C.What is the specific heat of the 400.0-g piece of metal,assuming that no significant heat is exchanged with the surroundings? The specific heat of this aluminum is 900.0 J/kg ∙ K and that of water is 4186 J/kg ∙ K.

• A)1900 J/kg ∙ K
• B)2270 J/kg ∙ K
• C)3300 J/kg ∙ K
• D)3800 J/kg ∙ K
• E)4280 J/kg ∙ K

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Definitions:

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The difference between what producers are willing to accept for a good or service and what they actually receive, measured by the area above the supply curve and below the market price.

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The difference between the amount a producer is willing to accept for a good or service and the actual amount received from selling it at the market price.

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