Typically if oxygen has a formal negative charge, it is participating in covalent bond(s). Report your answer as a whole number without any decimal places.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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um i think it might be a car?

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.