Q = − ( C Kal + c W ⋅ m W ) ⋅ Δ T = − ( 440 J ⋅ K − 1 ⋅ 100 g ) ⋅ 42 K ≈ 36 kJ Q = - ( C_Kal + c_W cdot m_W ) cdot %DELTA T = - (440 J cdot K^-1 cdot 100g ) cdot 42 K approx 36 kJ