Partial pressure question

1. Dec 2, 2008

dlw902

if you have an equation such as H2+2O2=2HNO2 and you know the partial pressure of H2 is .5 and the partial pressure of O2 is .3, does that mean that the partial pressure of 2HNO2 is .8?

2. Dec 2, 2008

Riogho

Where did that Nitrogen come from?

3. Dec 2, 2008

dlw902

sorry, I mean 2HO2