How many molecules of sucrose are in 380 g of sucrose

List four observations that indicate that a chemical reaction may be taking place

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

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.)