At 390 g of hot milk cools in a mug, it transfers 30,000 j of heat to the environment. what is the temperature change of the milk? the specific heat of milk is 3.9 j/g c. show work .

Answer

19.7°

Explanation

The quantity of heat is given by:

Q = mcΔt

where m is the mass, c is the specific heat capacity

Q = mcΔt

30,000 = 390/1000 × (3.9×1000) Δt

30,000 = 0.39 × 3900 × Δt

             = 1,521Δt

Δt = 30,000/1,521

    = 19.7°

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