The heat tag has no wiki summary.
2
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2answers
73 views
Can you heat water with additives?
I have been curious about this question for a while. If you want to warm up a large amount of water, is it feasible to do this by adding a substance that has an exothermic reaction with the water? ...
0
votes
1answer
34 views
Specific latent heat of fusion of a noble gas
Could someone explain to me where the additional energy goes when applied to an object in the state of melting (such as water) so that the temperature of the object does not increase, and could ...
1
vote
1answer
55 views
Ovalbumin Detection
I would like to know if anybody here knows of a method to detect the presence of ovalbumin, assuming it doesn't alter under heat, in a baked good. I'm thinking of something that can be brushed on to ...
2
votes
1answer
29 views
Better understanding the pyrolysis reaction
I'm no chemist, but much of my work revolves around biochar. I've always understood it with the following rough approximation:
$$CH_2O + heat \rightarrow BC + H_2 + CO + CH_4 + HC's$$
where the ...
2
votes
1answer
41 views
Is the activation barrier of a reaction related to the free energy or heat of formation of its reactants?
The energy barrier for activation appears in the derivation of a bimolecular reaction through collision or transition state theory, but it seems that from looking at diagram such as this one it seems ...
1
vote
1answer
36 views
Why do we need to incubate this system for 18 hours at 60 degrees Celsius?
I am conducting a bio-chemistry related experiment and I have been unable to understand a step which is commonly performed. The procedure that is confusing me is outlined in the supporting ...
1
vote
1answer
28 views
What determines a substance's energy of activation with air?
Ice will melt when heat is applied; paper will catch fire. In trying to figure out why — what the difference is between things that melt and things that catch — I found "Burn, Char, Melt" by Roberto ...
1
vote
1answer
224 views
Enthalpy Calculations, Heat of Formation/Combustion
I just don't understand how to do these and would really appreciate your help.
1) Ammonium dichromate decomposes in a reaction when heated. Calculate the heat transferred for the decomposition of ...
4
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1answer
245 views
Why does a substance with an endothermic heat of solution dissolve?
How does a substance with an endothermic heat of solution dissolve?
2
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3answers
66 views
Which materials/compounds expand in response to cold temperatures?
Which materials or compounds expand in response to cold temperatures?
This material or compound should expand at a slow (but constant rate), from about 0-20 months when in the following temperature ...
