Question

A calorimeter holds 55 g water at 21.0°C. A sample of hot iron is added to the water. The final temperature of the water and iron is 24.0°C. What is the change in enthalpy associated with the change in the water’s temperature?

Answer 1

The change in enthalpy associated with the change in the water's temperature is 693.84 J.

Step-by-step explanation:

The change in enthalpy associated with the change in the water's temperature can be calculated using the formula q = mcΔT, where q is the heat transferred, m is the mass of the water, c is the specific heat capacity of water, and ΔT is the change in temperature.

In this case, the mass of the water is 55 g, the specific heat capacity of water is 4.184 J/g°C, and the change in temperature is 24.0°C - 21.0°C = 3.0°C.

Plugging these values into the formula gives:

q = (55 g)(4.184 J/g°C)(3.0°C)

= 693.84 J

Therefore, the change in enthalpy associated with the change in the water's temperature is 693.84 J.