# ffsjoe

Senior Members

134

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• Birthday April 24

## Profile Information

• Location
Sydney, Australia

• Meson

10

1. ## Eol

A friend showed me this the other day, and I think it looks promising. What do you guys think? http://www.eol.org/
2. ## Have you switched to Compact Fluorescent?

Most of the lights in our house are cfl's with the exception of where it is too impractical. By 2009 iirc the incandescent light bulb will have been phased out in Australia. Except for things like microwave ovens, cars and so forth.
3. ## World Cup - Place Your Bets Now Pls

here here, couldnt agree more. Australia FTW!
4. ## How many grams of CO2?

I wish to find how how many grams of CO2 are needed to enrich a room to 1500ppm. I've tried to work it out but cannot figure it out completely. The dimensions of the room are 2.9m*1.9m*0.9m which equals 4.959m cubed rounded off to 5 cubic meters. Then to find how many cubic meters of CO2 are needed this is multiplied by 0.0015 5*0.0015 = 0.0075 cubic meters of CO2 needed. At a temperature of 25C and pressure of 100kPa 1 mole of a gas will occupy 24.79L. 1 mole of CO2 has a mass of 44 grams. .0075 (cubic meters) = 7.5 liters 24.79L/7.5L = 3.3053 grams of CO2 needed? This cannot be correct and I must have gone wrong somewhere could someone help put me on the right track?
5. ## River Surfing with Dynamite?

its at the end of the video. at about the 1 min 20 mark
6. ## River Surfing with Dynamite?

If that is so why would they bother putting the logo in? Plus the phrase "original thinking" sounds like it came from marketing. I think its just an internet ad, something that is really outrageous and everyone sends it to their friends or posts it on forums so it gets more exposure.
7. ## River Surfing with Dynamite?

At the end of the video it has Quicksilver's logo and since they make surf clothing etc. it makes me think that Quicksilver made the ad. Whether it is real or not I'm not sure. It certainly looks real but as other people have said you would have thought it would be on the news.
8. ## Perth, Australia Day

I received this picture in an email thats been going around so I don't know if anyone has already seen it but I'd like to show it anyway. "Sometimes the sky itself is the best show in town. On January 26, people from Perth, Australia gathered on a local beach to watch a sky light up with delights near and far. Nearby, fireworks exploded as part of Australia Day celebrations. On the far right, lightning from a thunderstorm flashed in the distance. Near the image center, though, seen through clouds, was the most unusual sight of all: Comet McNaught. The photogenic comet was so bright that it even remained visible though the din of Earthly flashes. Comet McNaught continues to move out from the Sun and dim, but should remain visible in southern skies with binoculars through the end of this month. The above image is actually a three photograph panorama digitally processed to reduce red reflections from the exploding firework." Quoted from http://antwrp.gsfc.nasa.gov/apod/ap070205.html
9. ## Dumbbells

imo the metallic ones with slide on iron weights are the best. You can change the weight as you progress at GutZ said and use different weights for different exercises.
10. ## Hoff Bombing

haha i love it. I'm thinking I might print several of these babies off in my free period and distribute them around the school, or maybe put some in teachers pigeon holes to be handed out in rollcall. Operation Hoff Bomb is a go
11. ## Sidewalk Jerks

The author sounds like he has a little bit of a problem. I normally just smile or say hi if I walk past someone in my neighbourhood. I don't think that this applies if you were in the city though, depends where you are I suppose.
12. ## Concentrating sulfuric acid

Ok thanks for the replies YT and woelen, yeah I know that you said or I just wanted to know which would be the best line of action to pursue. But reading my post it does sound like I thought they were the same method.
13. ## Concentrating sulfuric acid

Where could I find some EDTA? And if I were to concentrate it to the point so it crystalises how would I do that without the acid boiling off? Just heat it gently?
14. ## Concentrating sulfuric acid

I have obtained about 2.5 litres of battery acid strength sulfuric acid which has been filtered. I tried to concentrate it by boiling it in a stainless steel pot outside. After about 5 minutes of heating the acid turned cloudy white and started producing noxious fumes which were not visible, the acid hadn't started to boil yet. The acid started to react with the metal pot and after about 10 mins it had changed from being cloudy white to a pale green/torquoise colour. The inside of the pot now has a black coating of somthing. What I think happened is that when the acid was heated it reacted with the metal, maybe the chrome? But what I wish to know is what has formed in the acid and whether it can be removed. Next time I will use glass but I do not have any scientific equipment because I can't find anywhere that sells it retail.
15. ## My wife left me.

herme3 do you ever stop whinging, be happy that your alive. Why did your wife leave you?
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