Phiarie
Phiarie Phiarie
  • 07-05-2017
  • Chemistry
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Please help in Chemistry!!!! 15 points! I added a picture below...

Please help in Chemistry 15 points I added a picture below class=

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mya133 mya133
  • 07-05-2017
the answer would be choice B because the energy decreased by 20 J
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rachel73 rachel73
  • 07-05-2017
Yeah, the answer would be choice B because it drops from 40 to 20 so it's -20
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