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Will coffee in two differant size styrofoam cups in the same room conditions cool at the same rate? One cup is 8 oz. and the other would be 12 oz.

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Related: – Argus Jul 1 '12 at 20:46

If we may assume that the cups have the same form factor, or that the cups are identical and that the 12 oz just fills it up farther; in either case the 12 oz. will stay warmer longer.

Agreed with Georg: that the dominant heat loss mechanism in this case will be evaporative cooling

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