2H2(g)+O2(g) ---> 2H2O(l) delta H=

Why these answers are so?1- For this reaction 2H2 + O2 = 2H2O a- dela H=delta Hf b-delta Hc= delta Hf c- delta H= delta Hc d-
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2. asked by Omed
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CH4(g)+2O2 arrow CO2(g)+2H2O(1) delta H=-890.3kJ. Calculate delta Hwhen 5 grams of methane react with an excess of oxgen?o i
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2. asked by Anonymous
3. 691 views
calculate the delta h for the reaction 2C+2H--> C2H4C+O2--> Co2 delta h= -393.5 C2H4+ 3O2--> 2CO2+ 2H2O delta h= 1410.9 H2+ 1/2
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2. asked by Anonymous
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Consider the following three reactions:Ca(s) + 2H2O(l) ---> Ca2+(aq) + 2OH^- (aq) + H2(g) CaO(s) + H2O(l) ---> Ca2+ (aq) + 2OH^-
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2. asked by Rose
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Calculate delta H for the formation of one mole of N2O5 from the elements at 25 degrees C using the following data.2H2 + O2 -
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2. asked by Anonymous
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CH4 + 2O2 ---> CO2 + 2H2ODelta H H2O= -285.8 kJ/mole Delta H CO2= -393.3 kJ/mole What is the standard heat of formation of
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2. asked by kc
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Can anyone help me with these three questions?Predict the sign of delta S° and then calculate delta S° for each of the
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2. asked by Anonymous
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Does my work here look right?3. One mole of an ideal gas expands adiabatically into a vacuum. Calculate q, delta-e, w, and
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2. asked by Jess
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Enthalpy changes:H2O2(l) ----> H2O(l) + 1/2P2(g) delta H= -94.6kJ H2(g) + 1/2O2(g)----> H2O2 delta H= -286.0kJ Calculate the
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2. asked by Megan
3. 3,050 views
For the reactionI2(s)+Cl2(g) ==> 2ICl(g) delta H= 36kJ, delta S= 158.8J/K at 25° C. Calculate the temperature at which Keq is
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