Thursday
April 2, 2015

Homework Help: chem

Posted by tomi on Friday, October 3, 2008 at 11:58pm.

The combustion of hydrogen–oxygen mixtures is used to produce very high temperatures (approximately 2500 °C) needed for certain types of welding operations. Consider the reaction to be
H2(g) + 1/2O2(g) --> H20(l)

Standard enthalpy is -241.8kj


What is the quantity of heat evolved,
in kilojoules, when a 140g mixture containing equal parts of H2 and O2 by mass is burned?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Chemistry - enthalpy of combustion(help!!!) - i need help with the below ...
chem - The complete combustion of butane, (g) is represented by the equation ...
AP Chem - Reaction 1: NaOH + HCL --> H20 + NaCl delta H of -100.332 kj/mol ...
chem - The complete combustion of butane, (g) is represented by the equation ...
chemistry - decomposition of water(help) - Hydrogen is a very appealing fuel, in...
Chemistry - Hydrogen H2 is used as a rocker fuel. The hydrogen is burned in ...
Chemistry - The standard enthalphies of formation of ozone, O3(g), and oxygen ...
chemistry - White phosphorus (P4) was used for a long time in military ...
Chemistry - Methane gas (carbon tetrahydride) reacts with oxygen by combustion: ...
Chemistry - Hydrogen H2, is used asa rocker fuel. The hydrogen is burned in ...

Members