Given the following reactions Fe2O3 (s) + 3CO(q) 2Fe(s)+3CO2 (g)
3Fe(s) + 4CO2 (g) 4CO(g)+Fe3O4 (s) Delta H^ =-28.0 k) Delta H^ =+12.5kJ the triangle H^ 0 the reaction 3Fe2O3 (s)+CO(g) CO2 (g) + 2Fe3O4(s) the enthalpy of the reaction of Fe2O3 with
CO3Fe2O3 (s) + CO (g) → CO2 (g) + 2Fe3O4 (s) is kJ.
a) 40.5
b) +109
c) -15.5
d) -109
e) -59.0

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.

In as 1°, 2°, 3°, or 4°. be to . : °b: °c: °d: ° : °b: °c: °d: ° : °b: °c: °d: °e: °f: °g: °h: ° : °b: °c: °d: °e: °f: °g: °h: °i: °