Saturday
April 19, 2014

Homework Help: chemistry

Posted by anna on Saturday, March 26, 2011 at 9:13pm.

Hi,

I can't figure out how to start this one. I know I need to figure out hte proportions or something of that sort. Any help is greatly appreciated Thanks!

Calculate H for the reaction
NO(g) + O(g) NO2(g)

given the following:

NO(g) + O3(g) NO2(g) + O2(g)
H = -198.9 kJ

O3(g) 3/2 O2(g)
H = -142.3 kJ

O2(g) 2O(g)
H = 495.0 kJ

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physical chemistry - help! I am trying to figure out how to convert from ...
Alg 2/trig - I am doing Geometric sequences, but I cannot figure out how to find...
Chemistry - I can't figure out a clear way to write out the formatting of the ...
chemistry - Hey, I was just struggling with a question that I need to figure out...
british literature - I'm trying to find examples of doublespeak? Because my ...
Math - I need to figure out what a deposit of 3500 a month, with 9 percent ...
Math - I need to figure out what a deposit of 3500 a month, with 9 percent ...
Math - Which is generally a better credit term? (a) 2 / 20 (b) 1 / 20 (c) 2 / 10...
Chemistry - Fe2O3(s) + 2 Al(s) 2 Fe(l) + Al2O3(s) Suppose we want to make 18.0 ...
Calculus - Could anyone please help me figure out the discontinuity that is ...

Search
Members