Consider the following reaction at 298 K. 4Al(s)+3O2(g)⟶2Al2O3(s)ΔH∘=−3351.4 kJ
Calculate the following quantities.
Refer to the standard entropy values as needed.
deltaSsys= J/K
deltaSsurr= J/K
deltaSuniv= J/K

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.)

What produces wave a)sound b) heats c)transfer of energy d)vibrations

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel