How is the nitrogen cycle important to humans? It produces free nitrogen that humans can breathe. It converts nitrogen into a form that humans can obtain by eating other organisms. It produces nitrogen compounds that humans can breathe. It converts nitrogen into a form that humans can obtain by absorbing it through their ski

How many neutrons does a atom of cobalt have?

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 is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate