Given the standard enthalpy changes for the following two reactions: (1) n2(g) + 2o2(g)n2o4( δh° = 9.2 kj (2) 2n2o(g)2n2(g) + o2(δh° = -164.2 kjwhat is the standard enthalpy change for the reaction: (3) 2n2o(g) + 3o2(g)2n2o4(δh° = ?

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

What will most likely happen when two bromine atoms bond together?