Chemistry

Recent Answers

2013-04-15 Careers: Chemistry - deterioration of polyurethane? foam sneaker soles:

Hello Theo:    Residual reactivity/loss of plasticizer is not usually the cause of polyurethane (PU) degradation as most PUs can get by with little or no small molecule additives.  My strong suspicion

2013-03-25 Chemistry (including Biochemistry) - water chemistry:

To A: yes, as long as there is a membrane or surface that can extract protons.  I am not sure if they are doing this.      To B: Yes, water has temporary clustering.  Almost any reaction in water (including

2013-03-17 Thermodynamics - Calculating food calories using Q=MxCxdeltaT:

I haven't used a calorimeter since my college days.  Did you take into account the heat gained by the calorimeter?  A bigger sample should give you a bigger temperature change and help with errors due

2013-03-12 Chemistry (including Biochemistry) - Process of Dehydrogenation:

There are two different things going on when you compare the pure species to oxides in catalysis - they apply to dehydrogenation, but are also true in general.    [1]  First, you have to look at the oxidation

2013-03-11 Chemistry (including Biochemistry) - Process of Dehydrogenation:

While the dehydrogenation could happen in any system where a double bond is formed by the removal of two protons, a total overview would require a lot of time.  Lets limit our discussion to a popular topic: