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When 12.3 g of an unknown, non-volatile, non-electrolyte, X was dissolved in 100. g of methanol, the vapor pressure of the solvent decreased from 122.7 torr to 118.6 torr at 298 K. Calculate the molar mass of the solute, X.
What is the ratio of HCO3- to H2CO3 in an exhausted marathon runner whose blood pH is 7.1? Note: There is no need to consider the Ka2, use only the Ka1.
Identify the Qual I cation(s) that is(are) confirmed present in a reference solution by: the formation of a precipitate. the color of a soluble complex ion. the characteristic color of a flame test
What is the pH of a solution that is 0.10 M CH3NH2 (methylamine) and 0.15 M methylammonium chloride
Draw the structure of the product that is formed when but-1-yne is treated with the following reagents:1) disiamylborane; 2) H2O2, KOH; 3) LiAlH4. Disiamylborane = [(i-Pr)(CH3)CH]2BH, a hindered derivative of BH3.
Predict whether the following reactions will be spontaneous in acidic solution under standard conditions.
An aqueous solution contains a mixture of Cl- and I-. A buret is used to slowly add a solution of Ag+. Will AgCl or AgBr precipitate first
calculate the speed of the reaction when the concentration of N2O5 is of 0.0100 M b) How long, in minutes, to wait before the N2O2 concentration is reduced from 0.500M to 0.200M
A student performs a series of calorimetry experiments. She determines the calorimeter constant (Ccal) for her coffee cup calorimeter. She pours a 50.0 mL sample of water at 345 K into the calorimeter containing a 50.0 mL sample of water at 298 K.
Draw the skeletal structure of the enantiomer(s) of (2R,4R)-(-)-rose oxide. Draw the skeletal structure of the diastereomer(s) of (2R,4R)-(-)-rose oxide.
What are the main mononitro products of the nitration of the following compounds - Write structural formulas for the compounds
in a combustion experiment it was found that 12.096 g of hydrogen molecules combined with 96.000 g of hydrogen
A sports car moving at constant speed travels 105 m in 4.8 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2.
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