What mass measured in grams of iron would be produced if 4.0 moles of aluminum reacts with an excess of Fe₃O₄? 8Al + 3Fe₃O₄ → 4Al₂O₃ + 9Fe A. 224g
B. 252g
C. 504g
D. 448g

Which substances have the lowest melting points: ionic covalent, or metallic

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?