Double check to see if 105 g H2 is the correct answer. SHOW the math below

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.)

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons