Homework Help: Inorganic chemistry

Posted by Steve on Tuesday, May 12, 2009 at 6:43am.

The thermochemical equation for the combustion of hexane is shown below. C6H14(g) + 19/2Os(g) ==> 6CO2(g) + 7H2O(g) Delta H = -4163kJ What is the enthalpy change for the combustion of 2.50g C6H14?

2.50 g/86g = .029 mol
-4163kJ/.029 = -1.43 x 10^5kJ

Inorganic chemistry - drwls, Tuesday, May 12, 2009 at 8:15am
Wrong. You have to MULTIPLY the heat of combustion (per mole) by the number of moles. You divided, instead.

Answer this Question

Related Questions

Chemistry pls help - C6H14(l)->C6H14(g) ->6CO2(g) + 7H2O(g) -&...
Chemistry-pls help - I refer to the following question. Is my explanation ...
Chemistry - Are my answers correct? C6H14 + 19/2 O2 -> 6 CO2 + 7H2O ...
Chemistry - C6H14 + 19/2 O2 -> 6 CO2 + 7H2O delta H = -4163 kJ What mass...
Chemistry - In an experiment liquid hexane, C6H14 (l) is combusted completely to...
Chemistry - 1)Which thermochemical equation and data does not agree with the ...
chemistry - the thermochemical equation for th edissocation of hydrogen gas into...
chemistry - write a balanced chemical reaction representing the combustion of ...
Chemistry - A solution contains 10.0 g pentane, C5H12, 10.0 g hexane, C6H14 and...
Chemistry - Write the word and chemical equation for the following: Hexane ...

For Further Reading

First Name:
School Subject:
Answer: