I've just noticed, but isn't 'breathed out' air still high in oxygen and only about 4% CO2 ?
As in my old BSAC diving exam questions : Going in .... Nitrogen 79% ish Oxygen 20% ish Rare Gasses 1% ish Coming out ... Nitrogen 79% ish Oxygen 16% ish Rare Gasses 4% ish Cheers, Norman. ------------------------------------- Norman Dunbar Database/Unix administrator Lynx Financial Systems Ltd. mailto:[EMAIL PROTECTED] Tel: 0113 289 6265 Fax: 0113 289 3146 URL: http://www.Lynx-FS.com ------------------------------------- -----Original Message----- From: John Hitchcock [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 18, 2003 11:02 AM To: [EMAIL PROTECTED] Subject: Re: [ql-users] Bunsen Banging (WAS is minus one = -1?) Re; Tony, et-al's - -------------------- Hi Roy, > >>> 90% of the time, when you do this, it is OK - on the odd occasion though >>> the mixture of Air to gas is just right to explode in the bunsen burner. CO2 mainly - so no explosion. All it did was make the teachers demo burner go out. Some classes connected to water!!!! --------------------------- The water was **my** style. Problem was an accomplice - already secreted in the cupboard under trhe bench - was needed for the trick. Spend two marbles/ lend Hank Jansen/ promise a date with your sister- or the like. METHOD (To be neatly written up in chemistry 'best' book) 1. Connect a bench-water to an adjacent bench gas-tap. 2. Turn off all bunsens. 3. Sit, with attentive forward look, on the bench in front of step-1 connection. 4. Wait until Dicky-Stink (!) was ready with his demo - on the front bench. 5. 3 smart 'just swingin' your leg' heel-kicks to the under-bench door. 6. [The skilful bit - took practice] With hands behind your back, turn on the Step-1 above, water and gas taps. 7. Enjoy the enormous roof-reaching fountain that followed a spluttering front-tbench burner. 8. Do detention (again!) Note: The method never appeared on exam paper - as far as I know. Pity! This email is intended only for the use of the addressees named above and may be confidential or legally privileged. If you are not an addressee you must not read it and must not use any information contained in it, nor copy it, nor inform any person other than Lynx Financial Systems or the addressees of its existence or contents. If you have received this email and are not a named addressee, please delete it and notify the Lynx Financial Systems IT Department on 0113 2892990.
