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MMLU-Pro / 3783 / Two 50 kg pieces of copper, one at 175°C and the other at 40°C, are in contact…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Two 50 kg pieces of copper, one at 175°C and the other at 40°C, are in contact with each other. The heat flow between the two pieces of copper is given by q =mC_P\DeltaT, where C_P = 385 J kg^-1 K^-1 . Calculate the final tempera-ture and the amount of heat transferred between the two pieces of copper.

category

chemistry

options

  1. 95°C and -1500 kJ
  2. 100°C and -2000 kJ
  3. 87.5°C and -935 kJ
  4. 120°C and -1000 kJ
  5. 90°C and -1800 kJ
  6. 110°C and -1100 kJ
  7. 130°C and -1300 kJ
  8. 107.5°C and -1299.4 kJ
  9. 112.5°C and -1125 kJ
  10. 105°C and -1050 kJ

src

stemez-PhysicalChemistry

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Official source

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