Explain band theory of solids taking Lithium metal as an example​

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

What term describes technology that operates on an atomic level

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. a chemical engineer places a mixture of noble gases consisting of 4.37 g of he, 13.36 g of ne, and 36.65 g of kr in a piston-cylinder assembly at stp. calculate the partial pressure in torr of kr.