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laquitad88
laquitad88 laquitad88
  • 16-02-2017
  • Chemistry
Answered

Calculate the number of kilojoules to warm 125 grams of iron from 23.5 degrees Celcius to 78 degrees Celcius

Verified Answer :

crazyvballchic
crazyvballchic crazyvballchic
  • 16-02-2017

q=mcΔT

q=(125g)(0.446 J/(g x °C))(78°C - 23.5°C)

q=(125 g)(0.446 J/(g x °C))(54.5°C)       (Be sure to cancel all similar units)

q= 3038.375 J

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