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)?

Read these sentences from the text. near the equator, the tropics receive the most rain on a consistent basis. as a result, the fresh water falling into the ocean decrease the salinity of the surface water in that region. [. .] . . as the salt content of sea water increases, so does its density. what can you infer about how rain affects the density of surface water near the equator?

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work