When a reaction is carried out in 50.0 g of water, the temperature rises by 6.0 °C. Taking c = 4.18 J g⁻¹ K⁻¹, how much heat is released?
Correct answer B. 1254 J
Explanation
q = mcΔT = 50.0 g × 4.18 J g⁻¹ K⁻¹ × 6.0 K = 1254 J, about 1.25 kJ. A rise of 6.0 °C equals a rise of 6.0 K.
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