- Chemistry question: What is the value of Ka for the pyridinium ion, C5H5NH + ?Kb = 1.7 x 10^-9?

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How many pounds of ethyl alcohol must be evaporated in to a 20 ft x 35 ft x10 ft room to reach 1000 ppm? (MW=46) Assume NTP? Why tertiary alkyl halides are favourable for E2? What s is the percent yield of lead (in) nitrate and sodium iodide Pb(NO3)2 + 2 NaI = PbI2 + 2 NaNO3? Student measures a pressure of 775mmHg for a volume of 565 mL. Calculate the pressure for the same experiment with a volume of 585 mL.? What happens in terms of electrons when sodium reacts with bromine?