Homework Help: chem.

Posted by yo! on Sunday, June 18, 2006 at 6:11pm.

Hey this is my question:

At a temperature of 300°C and a pressure of 40.5 MPa, 90.0 mol of H2(g) and
80.0 mol of N2(g) are injected into a reaction vessel. When equilibrium is
established, 37.0 mol of NH3(g) are present. The number of moles of H2(g) present
in this equilibrium mixture is

This is my equation so far. How do I go from here?
N2(g) + 3H2(g) >> 2 NH3(g)
initially: 80.0 mol 90.0 mol 0
at equilib:80.0 – x 90.0 – 3x 0 + 2x
0+2x=37.0 mol given

So solve for x and use for 90-3x = ??

ok, I got 20 as the H2 (g) present, would this be right?

Hardly.
If 2x = 37, then x = 37/2 =18.5
Then 90-3x=90-3(18.5)=90-55.5 = 34.5. Check my thinking. Check my math.

mmmmmmmmmmm the answer is 45+897x99=11435%19=897

No one has answered this question yet.

Answer this Question

Related Questions

chem - In an equilibrium mixture of HCl, Cl2 and H2, the partial pressure of H2 ...
Chemistry - At a particular temperature a 2.0 liter flask contains 2.0 mol of ...
Chemistry - At a certain temperature, the equilibrium constant, Kc, for this ...
CHEM! - A gas mixture contains 0.60 mol of N2, 0.10 mol of H2, 0.20 mol of CH4. ...
Chemistry - At a certain temperature, the equilibrium constant, Kc, for this ...
AP Chem - to Dr. Bob - I don't understand how to even start this problem: A ...
Chemistry - At a certain temperature, the equilibrium constant, Kc, for this ...
Chemistry - srry I placed the question in the wrong spot. The equation is 2NH3 &...
Chemistry - Consider the reaction: CO(g) + H2O (g) <---> CO2(g)+H2...
chemistry - Methanol (CH3OH) is used in the production of many chemicals. ...

For Further Reading

First Name:
School Subject:
Answer: