(10g)(0.129J/g)(tf-18.0)=-(20.0g)(0.444J/g)(tf-55.6)

1.29tf-23.2=-8.88tf+494

where does 23.2 and 494 come from?

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(10g)(0.129J/g)(tf-18.0)=-(20.0g)(0.444J/g)(tf-55.6)

1.29tf-23.2=-8.88tf+494

where does 23.2 and 494 come from?

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## Answers (1)

multiply across