Calcium oxide (CaO) can react with carbon dioZinc chloride (ZnCl2) and hydrogen (H2) are the products of a single replacement reaction. What are the reactants of this reaction? ? →ZnCl2 H2 ZnHCl HCl Zn 2HCl H2 Zn Cl2xide (CO2) in a synthesis reaction. Select the most likely products of this reaction. CaO + CO2 → ? CaCO + O2 CaCO3 Ca + CO2 + O

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.