sjharrison04
11.03.2020 •
Chemistry
A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 4.10 kg of water at 37.5 degree C. During the reaction 125. kJ of heat flows out of the flask and into the bath.
Calculate the new temperature of the water bath. You can assume the specific heat capacity of water under these conditions is 4.18 J middot g^-1middot K^-1. Round your answer to 3 significant digits.
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Ответ:
44.7 degree (3 s.f)
Explanation:
mass of water = 4.10Kg
Initial temperature = 37.5C
Final temperature = x
Heat = 125 kJ = 125000 J
Specific heat capacity = 4180 J/kg°C
These parameters are given by:
H = MCΔT
ΔT = H / MC
ΔT = 125000 / (4.10 * 4180)
ΔT = 7.294
ΔT = T2 - T1
T2 = ΔT + T1
T2 = 7.294 + 37.5
T2 = 44.794 = 44.7 degree (3 s.f)
Ответ: