chemistry percentage error question alevel
https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FChemistry%2FA-level%2FTopic-Qs%2FAQA%2FPhysical-I%2F1.4-Energetics%2FSet-F%2FApplication%20of%20Hess%60s%20Law%201%20QP.pdf
page 8 ,part d) i don't get how the answer is 20.7 because ((-2422+2642) / 2422) x 100= (-)9.08%
page 8 ,part d) i don't get how the answer is 20.7 because ((-2422+2642) / 2422) x 100= (-)9.08%
Reply 1
12
Original post by ricecakes1
https://www.physicsandmathstutor.com/pdf-pages/?pdf=https%3A%2F%2Fpmt.physicsandmathstutor.com%2Fdownload%2FChemistry%2FA-level%2FTopic-Qs%2FAQA%2FPhysical-I%2F1.4-Energetics%2FSet-F%2FApplication%20of%20Hess%60s%20Law%201%20QP.pdf
page 8 ,part d) i don't get how the answer is 20.7 because ((-2422+2642) / 2422) x 100= (-)9.08%
page 8 ,part d) i don't get how the answer is 20.7 because ((-2422+2642) / 2422) x 100= (-)9.08%
Reply 2
10
Original post by hiabsotd
the -2642 kJmol^-1 value is from part c) . question d) asks you to use the value calculated from part b), not part c).
oh lol that makes sense thanks!
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