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Oxalic acid, H2C2O4 is a toxic substance found in spinach leaves, what is the morality of a solution made by dissolving 12.0g of oxalic acid in enough water to give 400.0mL of solution? How many milliliters of 0.100M KOH would you need to titrate 25.0mL of the oxalic acid solution according to the following equation? H2C2O4 (aq) + 2KOH(aq) ->K2C2O4(aq) +2H2O(l)
at a certain temperature k 9.1 10-4 for the following reaction.fescn2aq fe3aq scn -aqcalculate the concentrations of
nbspka for cyanic acid hcno 3.5 x 10-4 at 25degc . write the equilibrium that corresponds to ka. the standard heat of
Volume increases isothermally? Two pure gas species are mixed at constant temperature? Temperature increases isobarically? Pressure increases isothermally?
What ratio [CH3NH3+]/[CH3NH2] is needed to prepare a buffer solution with a pH of 8.60 from methylamine, CH3NH2, and methylammonium chloride, CH3NH3Cl? Kb of CH3NH2 = 3.7 10-4.
An aqueous solution containing 5.85g of an optically pure compound was diluted to 800.0mL with water and placed in a polarimeter tube 10.0cm long. The measured rotation was -5.93degrees at 25degrees C. Calculate the specific rotation of the compou..
Given that delta r H = 40.67 kj/mol for vaporization of H20 at 100 degrees celcius, what is delta S tot for vaporization of 1 mol of water at 1 bar pressure at 125 degrees celcius? Is this process spontaneous?
in a batch reactor the decomposition of species a follows n-th order kinetics as a-gtb rk cnthe conversion of a
if the initial water level in the graduated cylinder is 21.2 ml and the level rises to 27.7 ml after the object is placed in the cylinder, what is the volume of the object?
The diffusion coeffiicent of a particular kind of t-RNA molecule is D=1.0x10^-11 m^2 s^-1 om the medium of a cell interior. How long does it take molecules produced in the cell nucleus to reach the wall of the cell at a distance 1.0um, correspondi..
The boiling point of an aqueous 1.83 m (NH4)2SO4 (molar mass = 132.15 g/mol) solution is 102.5 *C. determine the value of the vant hoff factor for this solute if the kb for water is 0.512*C/m
the forensic technician at a crime scene has just prepared a luminol stock solution by adding 11.0 of luminol to creating a solution with a total volume of 75.0 . What is the molarity of the stock solution of luminol?
The heat of vaporization of diethyl ether (CH3CH2OCH2CH3) is 26.0 kJ/mol and its vapor pressure at 18 Celcius is 401 torr. What is the normal boiling point of diethyl ether?
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