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What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? Kf of water is 1.86°C/m. A) 17.6°C B) -176°C C) -1.50°C D) 1.50°C E) -17.6°C
What is the pKa value of the proton alpha to the phenyl group, and what is the pka value of the proton attached to the carbonyl carbon?
Develop an argument based on bond enthalpies for the importance of SiO bonds in substances common in the Earth's crust in preference to SiSi or SiH bonds
Given Data; P4+6Cl2=4PCl3 change temp= -2439 kj ,4PCl5=P4+10Cl2 change temp= 3438 kj calculate change in temp for the reaction PCl5=PCl3+Cl2.
If the partial pressures of CO2 and H2O in exhaled air are each 27.0 torr at 30.6°C, calculate the masses of CO2 and of H2O exhaled in 1.00 hour of sleep.
what is the acid dissociation constant of a weak acid if a concentration of 0.3 M gives a hydrogen ion concentration of 0.001M?
What is the concentration for each substance at equilibrium for the following gaseous reaction if the initial concentration of ethene,
It gave a mixture of MgO and ZnO that had a mass of 1.409g. What mass of An was there in the original mixture?
Ranked the free energy changes for hydrolysis of these phosphorylated compounds from the most negative (on the left) to the most positive (on the right)
Can someone please answer these questions regarding the endo and exo products formed through two different transition states in the reaction between furan and maleic anhydride.
After the reaction was complete, nitric acid was added to dissolve the AgSO3 but not the AgSe. The Ag+ from the dissolved Ag2SeO3 and the excess reagent required 16.74mL of 0.01370 M KSCN in a Volhard titration. How many milligrms of Se were conta..
What is the chemical name for CuSO4? a. Copper sulphate b. Copper sulphur oxide c. Copper (II) sulphate d. Copper (I) sulphate
How much energy in kilojoules is required to convert 260 mL of water at its boiling point from liquid to vapor?
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