Sagot :
The correct answer is 7596.5 Joules of heat energy is required to raise the temperature of 193 g of ethanol from 19°C to 35°C.
The amount of heat required is calculated as follows:
Q = mC∆T
m = mass =193g of ethanol
C = specific heat = 2.46J/g°C
∆T = T f-Ti = 35-19°C = 16°C
Q = 193g *2.46J/g°C *16°C
Q = 7596.5 J
We are interested in the value of Q, which is the quantity of heat. We would use the equation Q = mCΔT to do so. mass and specific heat are known; using the initial and final temperatures, the T can be calculated. Once we know three of the four quantities in the relevant equation, we can substitute and solve for Q. The amount of heat energy required to raise the temperature of a substance is referred to as its specific heat energy.
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