A block of aluminum has a mass of 490 grams (aluminum has a density of 2. 70 grams per milliliter) what is the volume of the block?.

Which compound contain an iron with a 3+ charge

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians?