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Energies

See energy (singular).


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Reasons why spontaneous human combustion is impossible?

... can you really ignite things with a hot water radiator? I am not aware of any neural short-circuit mechanism that could cause fire, because a) the energies in the nervous system are so small that you probably could not ignite even gasoline with that and b) the human body lacks good material for ...

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by biohazard
Mon Dec 09, 2013 11:30 am
 
Forum: General Discussion
Topic: Reasons why spontaneous human combustion is impossible?
Replies: 10
Views: 3852

Re: How do i know if a reaction is endothermic or exothermic?

Change in enthalpy = sum of bond energies of reactants - sum of energies of products = Total input energy – Total output energy From: Enthalpy Changes in Chemical Reactions http://faculty.ncc.edu/LinkClick.aspx?fileticket=L2sV5SDzIhE%3D&tabid=1871 ...

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by jonmoulton
Mon Nov 04, 2013 4:07 pm
 
Forum: General Discussion
Topic: How do i know if a reaction is endothermic or exothermic?
Replies: 1
Views: 3467

Re: Spectrophotometry - why can't some products be read?

The structure of a molecule determines what energies of electromagnatic radiation it will absorb. Lower-energy photons like microwaves correspond to changes like transitions in rotational energies about bonds, while higher-energy photons can trigger ...

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by jonmoulton
Thu Nov 01, 2012 4:13 pm
 
Forum: Molecular Biology
Topic: Spectrophotometry - why can't some products be read?
Replies: 2
Views: 2742

Do the simplest bacteria have ribosomes and helicase?

... you have proto-enzymes capable of manipulating RNA and at later stages DNA and amino acids. When you think of chemical reaction conditions and energies, take temperature into account. At high temperatures things can go even w/o catalyst present, and pre-life Earth was quite harsh by todays ...

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by dustman
Fri May 25, 2012 2:13 pm
 
Forum: Molecular Biology
Topic: Do the simplest bacteria have ribosomes and helicase?
Replies: 27
Views: 13642

Re: A bit of help regarding the hydrolysis of activated carriers

High energy compounds, sometimes referred to as “activated carriers” (e.g. phosphoarginine) have large negative free energies of hydrolysis, indicating that their reactions with water are spontaneous and proceed almost to completion. Explain why millimolar concentrations of activated ...

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by JackBean
Wed Apr 18, 2012 6:30 am
 
Forum: Cell Biology
Topic: A bit of help regarding the hydrolysis of activated carriers
Replies: 5
Views: 4255
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