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This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.