Homework Help: Chemistry

Posted by Tabetha on Tuesday, May 19, 2009 at 7:04pm.

how many moles of O2 would be needed to produce 1120.5 kJ of heat from the reaction:

3Fe + 2O2 yields Fe3O4+ 1120.5 kJ I got 627771.33 which I thought seemed a bit too high. My proportion was 1120.5=2 O2/1120.5.

Thanks again.

Chemistry - bobpursley, Tuesday, May 19, 2009 at 7:07pm
Nuts to your calculation. You were given that is the heat of reaction which used 2 moles of 02. Answer: 2 moles of O2

Answer this Question

Related Questions

science - What mass of iron must react to produce 3600 kJ of energy? 3Fe+2O2 &...
Chemistry - For the reaction: CH4(g) + 2O2(g)-->CO2(g)+2H2O (l) ÄH...
Chemistry - I'm using the equation c3H8 + 5O2 yields 3 CO2 + 4H2O + 2220 kJ ...
Chemistry - How many moles of ethane does it take to produce 8112 KJ in the ...
AP Chem - Consider the reaction 2 Al2O3(s) -> 4 Al(s) + 3 O2(g) . H...
9th grade chem - Using the following equation Ca(s) + 2C(s) --> CaC2(s...
ap chemistry - Carbon monoxide reacts with oxygen to form carbon dioxide by the...
chemistry - For each reaction, calculate the moles of product (in parentheses) ...
ap chemistry - How much heat is released if 2.00 moles CF2Cl2 reacts with 70.0 g...
chemistry - The thermite reaction is a very exothermic reaction; it has been ...

For Further Reading

First Name:
School Subject:
Answer: