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Adrenaline is a hormone released in response to physical and mental stress. A solution is prepared with 1.5g of adrenaline in 175g. of CCl4 (Tf= -22.3 degrees celcius and Kf = 29.8 C/m.) The freezing point of the solution was determined experimentally to be -23.7 degrees Celcius
a) determine the freezing point depression of the solution
b) Calculate the molality of the solution.
c) Calculate the molar mass of the solute using the expirimental data provided
Draw the corrct structure(s) for 2-chloro-2,3-dimethylpentane. Show stereochemistry clearly. Explicitly draw all four groups,
protonated means that the drug is in its acid form (HA) and dissociated means that the drug is in its dissociated form (A-). the pH of the stomach is about 1 or 2. the pH of the blood is about 7.4. given that a drug has a pKa of 4.2.
Consider the sublimation of mothballs at 27 C in a room having dimensions 7.5ft x 11.0ft x 7.1ft. Assume that the mothballs are pure solid naphthalene (density 1.16 g/cm3) and that they are spheres with a diameter
What is effective diffusion coefficient of CH4 in the nanochannel at the feed gas conditions? Is Knudsen diffusion important?
What is the free-energy cost of pumping Ca2+ out of a cell when the cytoplasmic concentration is 0.4 micromolar, and the extracellular concentration is 1.5 micromolar
draw 3 compounds with molecular formula c5h10 with c-c double bond with no cis-trans isomers
how does its vapor pressure change over time? It continues to steadily increase. It increases at first, then remains constant
react with an excess of H3PO4, how many grams of water and how many grams of Ca3(PO4)2 will have on the products side? Also, what type of reaction is it?
What volume of chlorine gas is produced when 0.952 mol of hydrochloric acid reacts completely according
its initial value in a first-order reaction, what is the rate constant for the reaction in the units min-1?
if the activation energy is 151 kJ/mo, calculate the temperature at which its rate constant is 7.45 x 10^-4 s^-1
Use the activity series to determine if a single replacement reaction can be seen to occur. If a reaction occurs, write the net ionic equation. a) Cobalt metal in a barium iodide solution b) Tin metal in a copper bromide solution
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