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AP Chemistry
6.4 Heat Capacity and Calorimetry
6.3 Heat Transfer and Thermal Equilibrium
IntermediateMCQGraphicalConceptual20.7k
The graph displays two curves on a set of axes with no background gridlines. The horizontal axis is labeled 'Time (s)' ranging from 0 to 120. The vertical axis is labeled 'Temperature of Water (°C)' ranging from 15 to 30 with tick marks at intervals of 5. Both curves start at the point (0, 20.0). A dashed curve representing the water containing Metal X rises smoothly from (0, 20.0) and plateaus horizontally at exactly 24.0°C by 60 s, remaining flat through 120 s. A solid curve representing the water containing Metal Y rises smoothly from (0, 20.0) and plateaus horizontally at exactly 28.0°C by 60 s, remaining flat through 120 s. A legend in the upper left indicates that the dashed line represents Metal X and the solid line represents Metal Y. No other particles, labels, text, or annotations appear.
Temperature of water versus time after the addition of Metal X (dashed line) and Metal Y (solid line).
A student performs two separate calorimetry experiments using insulated containers. In each experiment, a \(50.0\text{ g}\) sample of a solid metal at \(100.0\ ^\circ\text{C}\) is placed into \(100.0\text{ g}\) of distilled water initially at \(20.0\ ^\circ\text{C}\). The temperature of the water over time for the experiment with Metal X and the experiment with Metal Y is recorded in the graph below. Assuming negligible heat loss to the surroundings, which metal has the greater specific heat capacity, and what reasoning supports this conclusion?

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