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Here are the answers to 2020-2021 Review HW for Balancing, Types, Predicting and Energy Change of Chemical Reactions.
Part I
1) 3,2,1,6 Double Replacement
2) 1,3,1,2 Decomposition
3) 2,25,16,18 Combustion
4) 4,3,2 Synthesis
5) 1,3,2,3 Single Replacement
Part II
1. Products: Na1(NO3)1 (aq) and K2(SO4)1 (aq)
Net Ionic Reaction: All ions are spectator ions so Reaction does not exist.
2. Products: Ba1(CO3)1 (s) + K1Cl1 (aq)
Net Ionic Reaction: 1 Ba2+ + 1 CO32- --> 1 Ba1(CO3)1 (s)
3. Products: Ba1(SO4)1 (s) and Al (s)
Net Ionic Reaction: 3 Ba(s) + 2 Al 3+ + 3 SO42- ---> 3 Ba1 (SO4)1 (s) + 2 Al (s)
Part III
1) Activated complex
2) Greater than
3) Heat of Reaction (ΔH)
4) Absorbs
5) Activation energy (Eac)
6) Endothermic