Problem: It takes 11.2 kJ of energy to raise the temperature of 145 g of unknown substance X from 25.0 °C to 70.0 °C. What is the specific heat of X (J g–1 °C–1 )?A. 1.10B. 1.72C. 3.48D. 5.41E. 134

FREE Expert Solution

We’re being asked to determine the specific heat of an unknown substance in the given system.

We will use the heat released by the unknown substance to calculate its specific heat capacity. 

Recall that heat (q) can be calculated using the following equation:

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Problem Details

It takes 11.2 kJ of energy to raise the temperature of 145 g of unknown substance X from 25.0 °C to 70.0 °C. What is the specific heat of X (J g–1 °C–1 )?

A. 1.10

B. 1.72

C. 3.48

D. 5.41

E. 134

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