A 10.0 g sample of water at 50°C and 10.0 g sample of iron at 10°C are placed in a beaker together. What will happen to the temperature of the water?

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Answer 1 · 2017-12-29T12:24:19

Final temperature of water will be 46.11 degrees.

Energy in water #E=mtimesCtimesT#
x will be the final temperature (For specific heat coefficients: http://www.kentchemistry.com/links/Energy/SpecificHeat.htm):

#10times0.45times(x-10) = 10times4.18times(50-x)#

#4.5x - 45 = 2090 - 41.8x#

The final temperature of water and iron will be the same.

#4.5x + 41.8x = 2090+45#

#46.3x = 2135#

#x = 46.11# degrees. Final temperature.