x CA Scientist Measures The X lentActivity do?locator assignment-take&t; c Q. Se
ID: 506493 • Letter: X
Question
x CA Scientist Measures The X lentActivity do?locator assignment-take&t; c Q. Search [Review Topics Use the References to access important values if needed for this question. In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used to determine the specific heat of a solid, or to measure the energy ofa solution phase reaction. A student heats 67.ss grams of nickel to 97.92°C and then drops it into a cup containing s0.S0 grams of water at 24.28 OC. She measures the final temperature to be 30.07 oC. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant was determined in a separate experiment to be 1.83 J C Assuming that no heat is lost to the surroundings calculate the specific heat of mickel. Specific Heat (Ni) 2 more group attempts remainingExplanation / Answer
1)
Heat lost by calorimeter = heat gained by water + heat gained by calorimeter
m(Ni) * C(Ni)*(97.92 - 30.07) = mw*Cw*(30.07 - 24.28) + 1.83*(30.07 - 24.28)
67.88* C(Ni)*(97.92 - 30.07) = 80.80*4.184*(30.07 - 24.28) + 1.83*(30.07 - 24.28)
4605.66*c(Ni) = 1957.41 + 10.596
c(Ni) = 0.427 J/goC
Answer: 0.427 J/goC
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