Name the following:
[Fe(CO)₆][Ag(CN)₂]₂

I know that it's iron . But I am not sure if the iron is supposed to be iron(II) or iron (III).

How can you use chemical equations to predict the products of the reaction you can carry out?

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

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.)