Calculate the ΔH for the reaction 2 Al + Fe2O3 2 Fe + Al2O3
Using the following information:
2 Al + 3/2 O2 Al2O3 ΔH = -1670 kJ
2 Fe + 3/2 O2 Fe2O3 ΔH = -824 kJ

24 points and brainliest to anyone who can answer under 10 minutes with best ! the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?