- Sinh=e^x - e^-x/2 tanh=e^x - e^-x/ e^x + e^-x find coshx please help!?

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Chemistry!
Calculate the pH at the equivalence point in the titration of 55.0 mL of 0.180 M methylamine
(Kb = 4.4 × 10−4) with 0.330 M HCl.? I am trying to find a MSDS for Sanford #35569 Sharpie markers? Vkook or vhope? In quantum physics we learn that electrons behave differently when observed but how do they know that they are observed ? Hydrolysis of 0.011 mol of the fat, tristearin, yields how many grams of stearic acid (MW = 285)? Please show your work?