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Chemistry help (10 points)?





Which of the following is a product formed when Na2O and H2O react together? Na2OH O2 NaOH H2Question 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 2HCl H2 + Cl2 2K + 2 HCl 2 KCl + H2 SO3 + H2O H2SO4Question 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 compounds will produce H2O as one of the products when it decomposes? BaO Li2CO3 KClO3 H2SO4Question 6 (Multiple Choice Worth 2 points)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 7 (Essay Worth 4 points)Write the complete balanced equation for the reaction between iron (III) oxide (Fe2O3) and water (H2O). You do not need to make the subscripts smaller; just write them out as regular numbers. For example: Fe2O3 Question 8 (Essay Worth 4 points)Give the complete balanced equation for the reaction that occurs when magnesium chlorate (Mg(ClO3)2) is heated. You do not need to make the subscripts smaller in your answer, just write them out as regular numbers. For example: Mg(ClO3)2.



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One Response so far.

  1. barr'st says:

    1) NAOH2)CO23)SO3 + H2O H2SO44)Al + O25)H2SO46)the addition of energy