A substance has a specific heat of 0.870 J/g°C. It requires 2,000.0 joules to increase the temperature of 10.0 grams of the substance from its original temperature to its final temperature.

Use the heat equation q = mcΔT, where ΔT is the temperature change. Rearranging gives ΔT = 2,000.0 J ÷ (10.0 g × 0.870 J/g°C) ≈ 230°C. Therefore, the temperature change is 230°C, choice C.

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