How many moles of nitric acid, HNO3, are needed to react with 2.56 moles of Cu in the following reaction? 3 Cu+ 8HNO3 > 3Cu(NO3)2+ 2NO+ H2O

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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.