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the standard entalpy of combustion

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
3. 2,348 views
the standard entalpy of combustion of ethene gas C2h4 IS -1411.1 KJ/mol at SATP. Calculate Hf for ethene gas.my work so far:
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2. asked by Joce
3. 1,916 views
When 0.312g of glucose was burned in a bomb calorimeter (heat capacity 641 J/K) the temperature rose by 7.739 K. Calculate the
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2. asked by Kalli
3. 915 views
When 0.3212g of glucose was burned in bomb calorimeter of calorimeter constant 641J/K, the temperature rose by 7.943 K.
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2. asked by Nadira
3. 1,121 views
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short
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2. asked by laura
3. 561 views
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short
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2. asked by sandra
3. 518 views
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short
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2. asked by rebecca
3. 492 views
By reference to Molecular orbital Theory and giving the appropriate MO diagrams explain why the bond in N2 is very strong short
1. 0 answers
2. asked by sandra
3. 508 views
The combustion of carbon monoxide is represented by the equation below:CO (g) + 1/2O2 (g) ----> CO2 (g) a) determine the value
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2. asked by Nick
3. 1,248 views
The standard heats of combustion at 25°C (to liquid water) ofpropylene (C3H6) and hydrogen are 2058.44 kJ/mol and 141.78 kJ/g,
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2. 191 views