what is the domino that relates calories to Joules? Use / for divide, * for mult
ID: 818905 • Letter: W
Question
what is the domino that relates calories to Joules? Use / for divide, * for multiply, C for celsius.
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A metal paperweight with a mass of 129g is heated to 95C and placed in 44.6 g of water in an insulated container. The water was initially at 25.0C. The water with the submerged paperweight comes to a temperature of 40.0C. Calculate the heat (Q) of the system.Hint: Q = c m delta THint hint: The heat the water absorbs is equal to the heat the paperweight loses.Hint hint hint: The specific heat of water is 4.18 J/g*C .Give the answer, don't worry about sig figs.
Explanation / Answer
1 cal = 4.2 J
(129/1000) * (95 - 40)*s = (44.6/1000)*(40 - 25)*4.18
s = (44.6 * 15 * 4.18)/(129*55)
= 0.394 J/g*C
Q =
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