Recent content by rcrx

Find the new Molarity of either substance?

Both concentrations are in equal proportion and neither consumes the other. So that means there is 25.0 + 25.0 for a combined total of 50ml?

The rest of Xe has gone to the formation of XeF4

A 25.0 ml sample of 0.150 M HNO2 is titrated with a 0.150 M NaOH solution. What is the pH at the equivalence point? The Ka of HNO2 is 4.50x10-4 What I can't get is the fact I don't know how much has already been titrated at the equivalence point. So it's difficult to know the total volume...

Oh, sorry. Xe(g) + 2F2(g) ---> XeF4(g)

It must have left the container? I don't know, really :\

A reaction mixture initially contains 2.24 atm Xe and 4.27 atm F2. If the equilibrium pressure of Xe is 0.34 atm, determine Kp for the reaction. This question came out of the blue, and all I can think of is that Kp=(PXe)(PF2), but the answer is supposed to be 25. I don't get it? Any...

For the reaction at 523K PCl5 (g) <-> PCl3 (g) + Cl2 (g) and Kp = 0.500 What percentage of PCl5(g) will decompose if 0.100 atm of PCl5(g) is placed in a closed vessel at 523K? I am unsure of how to approach this problem, if anyone could give some insight I would greatly appreciate it.

So, pardon me, but I'd get the following? 23.4Rb^2 + (23.4)288Rb + (23.4)144^2 - 120Rb = 0

Homework Statement A light bulb is wired in series with a 144Ohm resistor, and they are connected across a 120.0-V source. The power delivered to the light bulb is 23.4W. What is ther resistance of the light bulb? Note that there are two possible answers. Homework Equations P = I^2R...

Thanks for the reply. But how do I set it up? I am so confused. I know it is simple, but some problems I just can't wrap my head around mathematically. Any and all help is very much appreciated!

Homework Statement An empty capacitor is connected to a 12.0-V battery and charged up. The capacitor is then disconnected from the battery, and a slab of dielectric material (K = 2.8) is inserted between the plates. Find the amount by which the potential difference across the plates changes...

Glad I found this. I'm doing the exact same problem out of the Cutnell Physics 7th Ed text. I get that there is a pivot point, but what the heck do I do? This problem is wracking my brains. Can anyone suggest what to start with? Once I get a hint I can probably piece it together. Much...

Thank god someone answered this. I've been stuck on the exact same problem from the same text. The question is worded quite poorly.

Derive an equation for the velocity around Earth. Satellite has no mass. Radius not given. Only period, G, and ME (earth) G = 6.67X10^-11 nm^2/kg^2 | Earth = 5.98x10^24 kg | Period = T = 1.20x10^4s I know I can find radius, and then find velocity. But I am supposed to derive an...