Calculate the amount of mole(s) of CoF2 required to react with 12.8 moles of HCI. CoCl2 + 2HF --> CoF2 + 2HCI

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.)

Draw metallic bonding if two copper

In apex! a liquid heated beyond a certain temperature becomes