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Andrei [34K]
3 years ago
5

Please help in Chemistry!!!! 15 points! I added a picture below...

Chemistry
2 answers:
aleksandr82 [10.1K]3 years ago
7 0
Yeah, the answer would be choice B because it drops from 40 to 20 so it's -20
krek1111 [17]3 years ago
5 0
The answer would be choice B because the energy decreased by 20 J
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