High School

1. What is the energy change when the temperature of 11.4 grams of solid chromium is decreased from 37.9 °C to 24.0 °C?

_____ Joules.

2. How much energy is required to raise... (Question seems incomplete; please provide the rest of the question.)

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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