Thank you sophiecentaur, I totally agree with you that it is our brain which ultimately determines how we perceive and discriminate different colours and the fact that we distinguish colours better than we can describe, there is nothing fudamental about it that would make a difference. I'm not...
Well it seems to be a very interesting topic.
To me, for example, I will first assume that the 'truth' (that red is red) is not the same as our knowledge of the 'truth' (that red is red but not blue). I'm not sure why we should differentiate red from blue, and why should I feel the same red...
Hi, all!
As I'm new to biology and life science, I'm interested in the classification system of life. However it's hard for me to memorize those seemingly Latin words of all kinds of lives. For example, I've absolutely no idea what 'Escherichia' means in Escherichia coli.
Do you know...
I think it is simple, because ethanol evaporates, it insulates paper from oxygen, or it burns and deplete oxygen around paper. Paper burns only with oxygen react with it, remember heat is not the only reason that paper burns.
That's all right!
I think equation 1)+2) will be the balanced equation you referred to.
Alka-seltzer is designed to relieve pain (the function of aspirin, which is also an acid) and neutralize excess stomach acid, you definitely don't want more acid from it, thus it's reasonable to be base...
1) citric acid + 3 NaHCO3 == citric acid salt + 3 CO2 + 3 H2O
2) aspirin + NaHCO3 == aspirin salt + CO2 + H2O
btw how did you get 20.806 from 1916/84.01? It's 22.807mmol. (And the units)
n(citric acid)=5.205mmol; n(aspirin)=1.804mmol.
Since 3*n(citric acid)+n(aspirin)=17.419mmol<22.807mmol...
Ok, first we need to know the amount of Sodium Bicarbonate because they produce carbon dioxide somehow.
Second, no matter aspirin or citric acid, it is the carboxylate that serves as acid for the production of carbon dioxide. we need to know which of them (acids or base) is overdosed.