What can you say about the basicity of the following compound: a.
4-nitro-phenoxy and 4-methoxy-phenoxy have about the same basicity

b.
4-methoxy-phenoxy is less basic than 4-nitro-phenoxy due to less lone pair availability

c.
4-nitro-phenoxy is less basic than 4-methoxy-phenoxy due to less lone pair availability

This element exists in adundance in the sun. explain how you would go about capturing sunlight. would this captured sunlight contain any of the element?

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.)

Compare and contrast physical changes with chemical changes.