Posted by **John** on Tuesday, April 5, 2011 at 10:41am.

Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside environment. Find the final temperature (in °C) of the water after equilibrium is reached.

- physics -
**drwls**, Tuesday, April 5, 2011 at 10:52am
The heat gained by the liquid water and the copper cup while they reach a final equilibrium temperature Tf equals the heat lost by the steam in the process of condensing and cooling to the same temperature.

Write that as an equation and solve for Tf. Don't forget to include the heat of condensation, 540 calories per gram

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