Dadas las siguientes ecuaciones y valores de ∆H° determine el calor de reacción (kJ) a 298 K para la reacción: 3 Fe2O3 (s) → 2 Fe3O4 (s) + 1/2 O2 (g)

Si:

2 Fe (s) + 3/2 O2 (g) → Fe2O3 (s) ∆H°= -823,41 kJ

3 Fe (s) + 2 O2 (g) → Fe3O4 (s) ∆H°= -1120,48 kJ

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.