Earth's season are influence by the earths tilt on its axis as well as its around the sun. a) barycenter b) precession c) revolution d) rotation

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 empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

What substance has a mass of 9.5g and volume of 2.1cm^3