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(Solved): A collee oup exiprmeter conta is \( 140.0 \) \& of water A 253 C A A \( 1240-\mathrm{B} \) block ol ...
A collee oup exiprmeter conta is \( 140.0 \) \& of water A 253 C A A \( 1240-\mathrm{B} \) block ol copper motal is the calarineter in \( J / K \). afting a time the contents of the cup reachit Express your answer using two signifieant figures. constant temperature ot \( 303 \cdot 1 \mathrm{C} \) Part D De Calormeiner?
Expert Answer
As, we know that q =mC?T So, heat lost by copper ?T = T? - T?= 30.3 °C - 100.4 °C = -70.1 °C = -70.1 K q = 124.0 g × 0.385 J·K?¹g?¹ × (-70.1 K) = -3347 J The negative sign shows that heat is lost. The copper block has lost 3