chemistry

Using the equations and enthalpy values provided, which mathematical expression can be used to determine the unknown enthalpy change of the decomposition of propane?

3 C + 3 O2 3 CO2 H =-1182 kJ

4 H2 + 2 O2 4 H2O H = -1144 kJ

C3H8 + 5 O2 3 CO2 + 4 H2O H = -2222 kJ

C3H8 3 C + 4 H2 H = ? kJ
(-1182) - [(-2222) + (-1144)]

(-2222) - [(-1182) + (-1144)]

(-1182) +(-1144) + (-2222)

(-2222) + (-1182) - (-1144)

  1. 👍 0
  2. 👎 0
  3. 👁 241
  1. I can't make out the question with no arrows to separate the products from the reactants. I'm not certain that supplying the arrows will help, either, because the board does not allow spacing after the first space.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. chemistry

    2C2H2(g) + 5O2(g)→4CO2(g) + 2H2O(g) a. Determine the enthalpy change for the reaction. ΔH = (4(-393.5)+ 2(-241.8)) – (2(227) + 5(0)) The enthalpy change is -2511.6. b. Determine the entropy change for the reaction. ΔS =

    asked by Morgan on January 31, 2015
  2. Chemistry

    If delta H°rxn and delta S°rxn are both positive values, what drives the spontaneous reaction and in what direction at standard conditions? The spontaneous reaction is a)enthalpy driven to the left. b)entropy driven to the

    asked by Alexis on April 20, 2014
  3. chemistry-Thermochemistry (grade 12)

    calculate enthalpy of H for the reaction N2H4(l) + 2H2O(l) -> N2(g) + 4H2)(l) Given the reactions N2H4(l) + O2(g) -> N2(g) + 2H2O(l) Enthalpy of H = -6.22.2 kJ H2(g) + (1/2)O2(g) -> H2O(l) enthalpy of H = -285.8 kJ/mol H2(g) +

    asked by Rose Bud on February 16, 2012
  4. AP Chemistry

    C2H2(g) + 2H2(g) --> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following table: C2H2(g) 226.7 kj/mol C2H6(g) -84.7 kj/mol [the values are the change in enthalpy] a.

    asked by Anonymous on September 27, 2009
  1. chemistry

    Determine the enthalpy for the partial combustion of methane to carbon monoxide- 2CH4(g) + 3O2(g) = 2CO(g) + 4H2O(l) from change in enthalpy (CH4,g) = -890. kJ mol-1 and change in enthalpy (CO,g) = -283.0 kJ mol-1

    asked by Anna on September 20, 2009
  2. Chemistry

    O3 + NO --> O2 + NO2 (all in gas state) Calculate the change in enthalpy for the reaction at room temp. using the following data ^Hf: O3 = 143 NO = 90 NO2 = 33 So, I have 143+90--> X + 33. I don't know what the enthalpy of O2 is.

    asked by Anonymous on February 18, 2008
  3. Chemistry

    Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g) delta H1? MgO(s) + 2HCl(aq) ->MgCl2(aq) + H2O(l) delta H2? To make these equations add up to the formation reaction of MgO, you will need to include the following: H2(g) + 1/2O2(l) delta H

    asked by Hannah on February 14, 2012
  4. Chemistry

    Find the enthalpy for : 4Fe + 3O2 = 2Fe2O3 I got the following informations: Fe + 3H2O = Fe(OH)3 + 3/2H2 - Enthalpy is 160.9 kj H2 + 1/2O2 = H2O - Enthalpy is -285.8 kj Fe2O3 + 3H2O = 2Fe(OH)3 - Enthalpy is 288.6 I try using Hess

    asked by Shadow on May 13, 2013
  1. Physics(Please answer, thank you)

    How do you determine the ymax? I know you have to use Q which I have values that were given to me as well as vo values but I am not sure what to do with these values. Physics - drwls, Saturday, September 15, 2012 at 1:29am Define

    asked by Hannah on September 15, 2012
  2. algebra

    Translate the phrase into a mathematical expression and then simplify. Nine times a number decreased by six times the same number. My answer is 9x-6x Write the corresponding mathematical expression. The simplified expression

    asked by kita on March 5, 2013
  3. math

    What is the definition for an EXPRESSION ? An expression in English can be a short sentence, or a sentence fragment. Take a hike. Go figure. What's up? Whatever. In math, an expression is again a fragment, it can be complete or

    asked by gio on September 19, 2006
  4. Science

    The combustion of methane in a laboratory burner is represented by the following equation: CH4 + 2 O2 > CO2 + 2 H2O Given the following three thermochemical equations: C + H2 > CH4 H=-74.87kJ C + O2 > CO2 H= -393.5 2 H2 + O2 > 2

    asked by Mike on July 9, 2015

You can view more similar questions or ask a new question.