In the formula for heat of vaporization, what represents the amount of heat needed to vaporize the substance? A:H
B:Moles
C:Q

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 are the first three quantum numbers for the electrons located in subshell 2s?

Can someone me with 6 to 10 plz this is for masteries test.