A hot 115.8115.8 g lump of an unknown substance initially at 181.3181.3 °C is placed in 35.0 mL of water initially at 25.0 °C and the system is allowed to reach thermal equilibrium. The final temperature of the system is 89.989.9 °C. Substance Specific heat (J/(g·°C)) aluminum 0.897 graphite 0.709 rhodium 0.243 titanium 0.523

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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A hot 115.8115.8 g lump of an unknown substance initially at 181.3181.3 °C is placed in 35.0 mL of water initially at 25.0 °C and the system is allowed to reach thermal equilibrium. The final temperature of the system is 89.989.9 °C.
Substance Specific heat (J/(g·°C))
aluminum 0.897
graphite 0.709
rhodium 0.243
titanium 0.523
tungsten 0.132
zinc 0.388
water 4.184
Using this information and the specific heat values for several metals in the table, identify the unknown substance. Assume no heat is lost to the surroundings.
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