A 250 gram sample of copper was dropped into a calorimetercontaining 850 grams o

Question

A 250 gram sample of copper was dropped into a calorimetercontaining 850 grams of water at 63.5 degrees celsius. Theintial copper temperature was -12.5 degress celsius. What wasthe final temperature of the water and copper? * I guess I just don't see where the mass of the samples fitin. I thought the metal and water would eventually reach thesame temperature, so you'd just subract final temperature frominitial temperature. Am I way off here? A 250 gram sample of copper was dropped into a calorimetercontaining 850 grams of water at 63.5 degrees celsius. Theintial copper temperature was -12.5 degress celsius. What wasthe final temperature of the water and copper? * I guess I just don't see where the mass of the samples fitin. I thought the metal and water would eventually reach thesame temperature, so you'd just subract final temperature frominitial temperature. Am I way off here?

Explanation / Answer

let the final temperature is T given the mass of the water M the mass of the copper m the specific heat of the water is S the pecific heat of copper is s the initia temperature of the water and copper are336.65 K and 260.65 K    then from the conservation of the energy wehave                              M*S* ( 336.65K -T) = m*s* ( T - 260.65 K ) plug in the values and calculate for T

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