Which of the following solutions would you expect not to conduct electricity?

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

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