what is the total heat lost if you have 8 grams of copper and the temperature changed from 43°C to 36°C
q = mass Cu x specific heat Cu x (Tfinal-Tinitial)
To calculate the total heat lost, you need to use the formula:
Q = mcΔT
where:
Q is the heat lost or gained,
m is the mass of the substance,
c is the specific heat capacity of the substance, and
ΔT is the change in temperature.
First, you need to find the specific heat capacity of copper. The specific heat capacity of copper is approximately 0.39 J/g°C.
Next, substitute the values into the formula:
Q = (8 g) * (0.39 J/g°C) * (36°C - 43°C)
Now, let's calculate:
Q = 8 * 0.39 * (-7)
Q = -21.84 J
Therefore, the total heat lost for 8 grams of copper when the temperature changes from 43°C to 36°C is approximately -21.84 Joules. Note that the negative sign indicates that heat is being lost.