1. Add arrows to the picture below to show how you think the scale will move if air DOES weigh something. Why do you think that?
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Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Will give ! what are the advantages and disadvantages of nuclear power? check all that apply. one advantage of nuclear energy is that it does not produce carbon dioxide emissions. storage of nuclear waste is a short-term problem associated with nuclear energy. the problem with uranium mining is that a large quantity of uranium must be extracted to meet energy needs because the energy release from uranium fission is so low. safe operation of a nuclear power plant can be jeopardized by a human mistake.

One similarity and one difference between an element and a mixture of elements