Answer :
The energy change when the temperature decreases of solid chromium is decreased by 13.9°C can be found using the formula ΔE = mcΔT. By substituting the given values and calculating, the energy change is 71.376 Joules.
To calculate the energy change when the temperature of solid chromium is decreased, we can use the formula:
ΔE = mcΔT
Where ΔE is the energy change, m is the mass (11.4 grams), c is the specific heat capacity of chromium, and ΔT is the change in temperature (37.9°C - 24.0°C = 13.9°C).
The specific heat capacity of chromium is 0.46 J/g°C, so substituting the values into the formula, we get:
ΔE = (11.4 g)(0.46 J/g°C)(13.9°C) = 71.376 J
Therefore, the energy change when the temperature of 11.4 grams of solid chromium is decreased from 37.9°C to 24.0°C is 71.376 Joules.
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