In an experiment, 190 g of aluminum (with a specific heat of 900 J/kg·K) at 54.0

Question

In an experiment, 190 g of aluminum (with a specific heat of 900 J/kg·K) at 54.0°C is mixed with 58.0 g of water (with a specific heat of 4186 J/kg·K) at 15.0°C, with the mixture thermally isolated. (a) What is the equilibrium temperature, in Celsius? What are the entropy changes of (b) the aluminum, (c) the water, and (d) the aluminum-water system?

(a)

Number

Units

(b)

Number

Units

(c)

Number

Units

(d)

Number

Units

I have everything but (d) i just need help with that>

(a)

Number

Units

Explanation / Answer

d)Ssystem = Swater + Saluminum

S = 13.2-12.41= 0.79 J/K

In a spontaneous process, the entropy of the system should increase, as seen above.

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