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use standard enthalpies of formation

Calculate the enthalpy of reaction from the standard enthalpies of formation of the reactant and product molecules.2C2H6+7O2-->4
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2. asked by Betsie
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please help me? :)topic: standard enthalpies of formation "Calculate ΔHf° of octane, C8H18(l), given the entalpy of combustion
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2. asked by marie
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Calculate the heat of formationof benzene if the heat of combustion of benzene is 3260 kj/mol, given the following enthalpies of
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2. asked by priya
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standard enthalpies of formationH20(l) = -286 LiOH(s) = -487 standard enthalpies of solution for LiOH(s) to split into it's ions
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2. asked by Gemma
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Calculate the enthalpy change of formation for the following reactions using Hess's law, and the enthalpies of formation given
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2. asked by BOB
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A scientist measures the standard enthalpy change for the following reaction to be -2923.0 kJ :2C2H6(g) + 7 O2(g) 4CO2(g) + 6
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2. asked by Anonymous
3. 3,156 views
A scientist measures the standard enthalpy change for the following reaction to be -172.4 kJ :2SO2(g) + O2(g) 2SO3(g) Based on
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2. asked by jojo
3. 1,386 views
The standard molar enthalpies of formation of H2O(l) are given as:H2(g) + 1/2 O2(g) → H2O(l) △f Ho = –285.8 kJ/mol What
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2. 107 views
C2H4(g)+ 3O2(g) --> 2 CO2 (g) + 2H2O (l)The complete combustion of 11.22g of ethylene, C2H4 (g), via the given equation,
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2. asked by cancan
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Propane (C3H8) burns according to the following balanced equation: C3H8(g)+5O2(g)→3CO2(g)+4H2O(g) Part A Calculate ΔH∘rxn
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2. asked by lea
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