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MMLU-Pro / 9614 / A piece of iron of mass, M = 20g is placed in liquid air until thermal…

Problem

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

question

A piece of iron of mass, M = 20g is placed in liquid air until thermal equilibrium is achieved. When it is quickly taken out and placed in water at 0°C, a coating of ice of mass, M = 5.22g forms on it. The mean specific heat,c_iof iron over the range of temperature of the experiment is 0.095 cal/g -°C and the heat of fusion L, of water is 80 cal/g. What is the temperature of the liquid air?

category

physics

options

  1. -210°C
  2. -190°C
  3. -230°C
  4. -280°C
  5. -220°C
  6. -260°C
  7. -200°C
  8. -270°C
  9. -240°C
  10. -250°C

src

stemez-Physics

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Source and history

upstream_id / Original problem ID
9614
task_id
c3a4bafd-2b04-511a-adc3-3aac4dba6516
task_key
default--test--9614
task_revision_id
1
config / split
default / test

Official source

initial import