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Sagot :
In this question, we have a situation in which we have to use the Calorimetry formula, which is how much heat was released or absorbed (in Joules), after we had a change in temperature of a compound. The formula for this Calorimetry question is:
Q = mcΔT
Where:
Q = is energy as Heat
m = mass in grams, 200 grams
c = is the specific heat capacity, 0.21 J/g°C
ΔT = the change in temperature, calculated as Final Temperature - Initial T
45 - (- 20) = 65
Now we add these values into the formula:
Q = 200 * 0.21 * 65
Q = 2730 Joules of heat, letter B
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