Chemical Engineering

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

2013-03-17 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

2013-03-04 Careers: Chemistry - Stoichiometry Problem:

Normally I do not help with homework, but I would be happy to give you the method:    1.  find out which is the limiting reagent (LR) - convert both the calcium sulfide and the calcium sulfate to moles