What element is found in liver and red blood cells and is needed to prevent anemia

Find the mass in grams of 1.37x1020 particles of h3po4

How does a large body of water, such as the ocean, influence climate?

The reaction below shows a system in equilibrium. how would a decrease in temperature affect this reaction? a. the rate of formation of the gases would increase. b. the equilibrium of the reaction would shift to the left. c. the equilibrium would shift to cause the gases to sublime into solids. d. the chemicals on the left would quickly form the chemical on the right.