February 27, 2017

Homework Help: Chemistry

Posted by Austin on Wednesday, September 10, 2008 at 2:35am.

Hydrazine, N2H4, is a colorless liquid used in rocket fuel. What is the enthalpy change for the process in which hydranzine is formed from its elements?

N2(g) + H2(g) => N2H4(l)

Use the following reactions and enthalpy changes:

N2H4 + O2 => 2H2O DeltaH = -622.2KJ
H2 + 1/2O2 => H2O DeltaH = -285.5KJ

So how would you do this?

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