4Al(s)+3O₂(g)→2Al₂O₃(s) How much energy is released when 6 moles of Al₂O₃ is produced?

1) - 3351 kJ
2) -6702 kJ
3) -10053 kJ
4) -13404 kJ

the answer would be a

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.