chico1185
chico1185 chico1185
  • 07-08-2018
  • Physics
contestada

Please help me I have no idea what to do

Please help me I have no idea what to do class=

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ahmedoss ahmedoss
  • 07-08-2018

i don't remember but u guess when the sign was positive it was endothermic and when it was negative it was exothermic that is 400 j with positive sign means endothermic but check the sign law cuz it has been too long since i studied this

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