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The boiling point of methanol (CH3OH) is 64.7 oC and delta H vap = 71.8 kJ/mol. What is delta S for the vaporization of 2.15 mol of CH3OH at 64.7 oC?
What is the pH at the equivalence point of a weak base-strong acid titration if 20.00 mL of NaOCl requires 28.30 mL of 0.50 M HCl? Ka = 3.0 × 10-8 for HOCl.
Calculate the amount of acid that would be left in the water solution after four 20-mL extractions with ether. Do the same calculation, using one 80-mL extraction with ether, to determine which method is more efficient.
A wastewater treatment plant produces 34, 500 pounds of secondary sludge each day. Wastewater flows into the plant at a rate of 5.6 MGD and has an influent BOD of 325 mg/L. How many pounds of BOD are destroyed by this plant each day
if a 17.5 g sample of ironiii oxide reacted with 5.00 l of carbon monoxide at 788 torr and 76 degrees celsius until one
a certain first-order reaction a--gt products has a rate constant of 3.60times10-3 at 45 degrees celsius. how many
When 0.200g of a high-molecular-weight compound is dissolved in water to form 12.5mL of solution at 25 degrees celsius, the osmotic pressure of the solution is found to be 1.10x10^-3 atm. What is the molar mass of the compound
Use the concentrations given below for the concentrated chemcal molarities and write out your calculations to obtain the volume of each stock solution needed to obtain 30.00 L of a 6.00 M
A gaseous fuel mixture contains 23.0% methane CH4, 44.0% ethane C2H6 and the rest propane C3H8 by volume. When the fuel mixture contained in a 1.53L tank, stored at 748 mmHg and 298 K, undergoes complete combustion, how much heat is emitted
This solution freezes at -0.159C calculate the degree of dissociation( the fraction of molecules dissociated) for the acid in this solution ( assume the mean ionic activity coefficient has a value of 1). c) from the dgree of dissociation determine..
the three isomers 0-,m-, and p-xylenes are are very difficult to distinguish via proton NMR. However they are instantaneously distinguishable via carbon NMR how. What do you expect to see for each
A quantity of gas under a pressure of 1.78 atm has a volume of 550 cm square. the pressure is increased 2.50atm while the pressure remains constant what is the new volume.
Calcium fluoride CaF2 is an insoluble salt. The Ksp is 3.4 x 10^-11. Calculate the molar solubility of calcium fluoride.
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