Name two different ecosystems. name one living part of each ecosystem. name one non living part of each ecosystem.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h

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.