find the expression for amount of heat produced
Answers
Answer:
Heat Transfer Formula. Heat, a measure of thermal energy, can be transferred from one point to another. Heat flows from the point of higher temperature to one of lower temperature. ... Answer: The change in temperature, ΔT = 33°C, and the specific heat for aluminum, c = 0.900 J/g°C. The heat transfer Q = 1500 Joules.
Imagine 100 cm3 of an acid was mixed with 100 cm3 of an alkali, then the temperature was increased from 24 degrees C to 32 degrees C. To calculate the amount of heat released in joules, the first thing you do is calculate the temperature change, ΔT (32 - 24 = 8). Next, you use Q = mc ∆T, i.e. Q = (100 + 100) x 4.18 x 8. Dividing the specific heat capacity of water, 4181 joules/kg degrees Celsius by 1000 to get the figure for joules/g degrees C. The answer is 6,688, which means 6688 joules of heat is released.