Mixture Composition: PV=nRT Problem,1 atm. 0.4 atm.

  • Thread starter Thread starter Riles246
  • Start date Start date
Riles246
Messages
12
Reaction score
0
The total pressure of a mixture of oxygen and hydrogen is 1 atm. The mixture is ignited and the water is removed. The remaining gas is pure hydrogen and exerts a pressure of 0.4 atm when measured at the same values of T and V as the original mixture. What was the composition of the original mixture in mole percent?

I started by using the equation P=nRT/V. Since the V, R and T are the same before and after the reaction I solved the equation for P/n = RT/V so the two equations (for before and after the reaction) could be set equal to each other. Then I got stuck! Please Help!
 
Physics news on Phys.org
This is not advanced physics, but basic chemistry.

In what molar ratio do hydrogen and oxygen react?

There ir 0.4 atm of hydrogen left. 0.6 atm of mixture was consumed.
 

Thread 'Initial conditions for orbits around a wormhole'

Hi, I had an exam and I completely messed up a problem. Especially one part which was necessary for the rest of the problem. Basically, I have a wormhole metric: $$(ds)^2 = -(dt)^2 + (dr)^2 + (r^2 + b^2)( (d\theta)^2 + sin^2 \theta (d\phi)^2 )$$ Where ##b=1## with an orbit only in the equatorial plane. We also know from the question that the orbit must satisfy this relationship: $$\varepsilon = \frac{1}{2} (\frac{dr}{d\tau})^2 + V_{eff}(r)$$ Ultimately, I was tasked to find the initial...
View full post »

Thread 'Help to convert units of a simple formula'

The value of H equals ## 10^{3}## in natural units, According to : https://en.wikipedia.org/wiki/Natural_units, ## t \sim 10^{-21} sec = 10^{21} Hz ##, and since ## \text{GeV} \sim 10^{24} \text{Hz } ##, ## GeV \sim 10^{24} \times 10^{-21} = 10^3 ## in natural units. So is this conversion correct? Also in the above formula, can I convert H to that natural units , since it’s a constant, while keeping k in Hz ?
View full post »

Similar threads

What Is the Boiling Temperature of the Liquid Using Van der Waals Equation?
Replies
2
Views
2K
What Was the Original Mole Percentage of O2 and H2 in the Mixture?
Replies
2
Views
2K
How to find the Density of Air with PV=nRT?
Replies
7
Views
3K
Chemistry Understanding chemical potential of gas in mixture versus pure gas, used in derivation of equilibrium constant
Replies
1
Views
1K
What is the composition of the original gas mixture in mole percent?
Replies
3
Views
3K
Pressure in a bomb calorimeter at the moment of combustion
Replies
1
Views
995
Calculating Moles and Molecules of Oxygen in a Gas Cylinder
Replies
10
Views
3K
Reversible Adiabatic Process Question
Replies
4
Views
9K
Calculate Moles of Acetylene & O2 in C2H2+O2 Reaction at 60C, 10mmHg
Replies
6
Views
2K
I Why is estimation of ##\frac{Pv}{RT}=1+BP+CP^2+...## interesting?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top