What coefficient for O2 demonstrates the Law of Conservation of mass?CH4 + __O2 -> CO2 + 2H2Oa. 1b. 2c. 3d. 4

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

c. orbital shape i hope this is correct

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.