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Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 month ago

Chem help!?

Using the following information to answer the question.

A student performed a calorimetry experiment and recorded the following data.

Mass of aluminum calorimeter 470.0 g

Mass of the calorimeter water 100.0 g

Specific heat of aluminum 0.900 J/gC

Specific heat of water 4.184 J/gC

initial temperature of calorimeter water 23.0 C

final temperature of calorimeter water 24.6 C

Mass of silicon 52.0 g

initial temperature of silicon 61.6 C

Calculate the amount of energy lost or gained by the silicon in the experiment?

1 Answer

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  • 1 month ago
    Favorite Answer

    Heat gained by Al = 470.0 g (0.900 J/gC) (24.6-23) = 677 J

    Heat gained by H2O = 100.0 g (4.184 J/gC) (1.6C) = 669 J

    Heat gained by calorimeter and water = 1346 J

    Heat lost by Si = -1346 J 

    (If this is the final answer, you should round this to 2 significant figures because your temperature change for the water is only 1.6 C.)

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