Problem page a gas made up of atoms escapes through a pinhole 0.225 times as fast as h2 gas. write the chemical formula of the gas.

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.)

When a septic tank backs up a goes in to clean it out

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false