Question

When solutions of two reactants were mixed in a coffee-cup calorimeter, the following temperatures were recorded as a function of time. Plot the data on one of the available pieces of graph paper. Obtain tf, the final temperature, by extrapolating to the time of mixing (time = 0 s) with a straight line. The initial temperature, ti, was 24.3°C.

Time (s) t(°C) Time (s) t(°C)
30 38.6 150 39.3
60 39.7 180 39.2
90 39.5 210 39.1
120 39.4 240 39.0

Answer 1

Would I use this equation:
ΔT = Tfinal - Tinitial?

Answer 2

rgbgt

Answer 3

24.6

Answer 4

34

Answer 5

45