Recent content by relatively-uncertain

Oohhh! Thank you so much ! I really appreciate the help!

Okay - thankyou! So it would be: 127.36/ 0.2788 = 456.8 =457 balloons I have checked the answer and it is 618. If my working out seems okay, would the answers be incorrect? (Considering that the 10^8kPa is most likely a misprint?) Thankyou!

Using 108 kPa, and the equations above I have got an answer of 588 , but I am not sure it is right Here is my working: 1. Calculated the mol of helium in cylinder at 30 degrees celsius PV=nRT n= (16500•25) / (8.31•303) =163.83 mol 2. Mol of helium in balloons n=(108•6.5)/(8.31 • 303)...

I have calculated it from: 16,500 • 25.0= n•8.31•288 And n = 172.36 Thanks

I have just checked the question again and am sure that it is 10^8kPa. It does seem more reasonable to be 108 though.

I don't think so :/ But I am unsure of how to use any other figures in the equation ie. what to do with the data given in this question. What should I be doing instead that will give me the right number of mols in each ? Thanks

From PV=nRT , n= 172.36 mol And for the balloon: 6.5 • 10^8= n•8.31•303 and n= 2.58x10^5 mol Would this be the right steps to take? Thanks!

Hi everyone, I'd really appreciate any help with this problem: A helium cylinder for the inflation of party balloons hold s 25.0L of gas and is filled to a pressure of 16500kPa at 15 degrees celsius. How many balloons can be inflated from a single cylinder at 30 degrees celsius if the volume of...

So recently I saw a video with Richard Gott explaining a self-creating universe. There's three quick questions I'm confused about that I did not understand very well from the video: 1. How does a closed time-like curve allow the universe to self-create? Wouldn't the universe just go around the...

My question is, what is the BGV theorem? and what exactly does it say? I was watching A debate on cosmology where William Lane Craig uses the Borde, Guth and Vilenkin theorem to say the universe had a beginning. I was wondering if someone could possibly explain the case of the BGV theorem and...

In this analogy, there's no future boundary because the universe expands forever, if the model is like an hour-glass shape, and the middle was the lowest entropy...doesn't the past also expand forever into the past? I don't really understand this notion... thanks for your help!

I'm not very advanced in physics(high-school student) so forgive me for any misrepresentations but no I don't know any laws of physics that show energy or matter without either existing first, but I don't suppose you can say that the "universe created itself".. it does seem logically impossible...

Thank-you so much for your help! I've got a few clarifications in case I have misunderstood anything here so I hope you don't mind. If you cut the tip and glue another cone in the opposite direction, doesn't that leave you with the middle being lowest entropy? How can a high entropy decrease to...

Hi, I'm slightly confused with the Aguirre-gratton model, and was wondering if someone could explain using simpler terms? I have read from : http://www.preposterousuniverse.com/blog/2007/04/27/how-did-the-universe-start/ " Aguirre and Gratton have presented a proof by construction that such a...

Thanks again for your answer! So, just to clarify, baryonic asymmetry would require asymmetry in C and CP? The CERN test was the magnetic moment, and is only a test for CPT symmetry. So the only thing they have confirmed is that there is no asymmetry in CPT? Please tell me if I have made any...