Given the following reactions and their enthalpy changes,

cis C4H8(g) +6 O2(g) → 4 CO2(g) + 4 H2O(g) ΔH = 2710 kJ

trans C4H8(g) +6 O2(g) → 4 CO2(g) + 4 H2O(g) ΔH = 2707 kJ

what is the enthalpy change for the reaction

cis C4H8(g) → trans C4H8(g)?

Why is nh3 classified as a polar molecule

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.