chemistry

Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.

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twinkle
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chemistry

Post by twinkle » Sat Oct 15, 2005 8:08 am

i know dis is more science dan biology......but pls help.........

what 2 types of sulphur dat can be prepared in the laboratory?

How does suphur dioxide smell?

is there a symbol for energy eg: oxgen= O??

pls pls cud sum1 help :?:

sdekivit
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Post by sdekivit » Sat Oct 15, 2005 8:42 am

one thing: sulphur containing compounds are poison --> they really smell very bad.

lara
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chemistry

Post by lara » Sat Oct 15, 2005 10:42 am

E for energy,undoubtedly!!

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Post by biocraz » Sat Oct 15, 2005 6:10 pm

sulphur dioxide smells really bad.. ive tried it in the lab.
I dont think there is any symbols for energy because it is a result for any reaction. for example Respiration reaction where by heat energy is being produced. According to physics theory, enegy is something that cant be created or destroyed, it can be in any form, like potential energy, kinetic enegy, heat energy or sound energy. Energy can be transformed form one for to another.

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mith
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Post by mith » Sat Oct 15, 2005 8:30 pm

True, in a closed system you would only see deltaE but in open systems you can introduce energy, which would probably be designated E.
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victor
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Post by victor » Mon Oct 17, 2005 1:06 pm

biocraz wrote:According to physics theory, enegy is something that cant be created or destroyed, it can be in any form, like potential energy, kinetic enegy, heat energy or sound energy. Energy can be transformed form one for to another.


It's not according to Physics theory, but the first law of the Thermodynamics. The second law talks about the Enthropy of the system and environment... :lol:
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