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What is usually needed to help a decomposition reaction to occur? a more active second reactant the addition of energy the addition of an enzyme a lower temperatureQuestion 2 (Multiple Choice Worth 2 points)Which of the following is a product formed when CaCO3 decomposes? Ca2 O2 CO2 CaO2Question 3 (Multiple Choice Worth 2 points)Which of the following is a synthesis reaction? C2H4 + 3 O2 2 CO2 + 2 H2O 2HBr H2 + Br2 CO2 + H2O H2CO3 F2 + 2 HCl Cl2 + 2 HFQuestion 4 (Multiple Choice Worth 2 points)Which of the following combinations of reactants will result in a synthesis reaction? Li + HCl Al + O2 Ca + H2O F2 + HClQuestion 5 (Multiple Choice Worth 2 points)Which of the following is a product formed when K reacts with Cl2? KCl K2Cl KCl2 K2Question 6 (Essay Worth 4 points)Write the complete balanced equation for the decomposition of Al(ClO3)3. You do not need to make your subscripts smaller; just write them out as regular numbers. For example: Al(ClO3)3.Question 7 (Essay Worth 4 points)Write the complete balanced equation for the reaction between aluminum metal (Al) and chlorine gas (Cl2). You do not need to make the subscripts smaller; just write them out as regular numbers. For example: Cl2.Question 8 (Multiple Choice Worth 2 points)Which of the following compounds will produce H2O as one of the products when it decomposes? BaO Li2CO3 KClO3 H2SO4

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