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A solution of malonic acid, H2C3H2)4, was standardized by titration with 0.1000 M NaOH solution. If 24.91 mL of the NaOH solution were required to neutralize completely 15.78 mL of the malonic acid solution, what is the molarity of the malonic acid solution?
H2C3H2O4(aq) + 2NaOH(aq) -> Na2C3H2)4(aq) + H20(l)
A coffee cup calorimeter contains 25.42g of water, at 21.0g deg C. Then 69.18g of water, with an initial temperature of 70.1 deg C, was added to the calorimeter. The final temperature of the water in the calorimeter was 23.8 deg C
calculate the final temperature when a 11.3 gram sample of ice at 0oc is placed into a styrofoam cup containing 119
when extracting an organic compound from an aqueous solution into an organic solvent e.g. diethyl ether a chemist will
A sample of a radioactive substance used in detecting skin cancer produced 592 counts in one minute at the beginning of a test and a count of 451 counts in one minute after one day. If the background counts-per-minute was 48, what is the half-life..
at a given temperature the vapor pressures of benzene and toluene are 183mm Hg and 59.2mm Hg. Calculate the mole fraction of benzene in the vapor phase over a solution of benzene and toluene with Xbenzene=0.600
The mass of a liquid that occupies 15.5 mL is found to be 22.35 g. What is the density of the liquid
How long would it take for a radioactive isotope with a half life of 2 weeks to lose at least 70% of its radioactivity? Describe two clinical uses of Radioactivity.
Using the Grubbs test, decide wheter the value 216 would be rejected from the set of results 192, 216, 202, 195 and 204. G ( 95% confidence) : 1.463, 1.672, 1.822, 1.938, 2.032
Write statements about how adding and removing reactant and product shifts a system at equilibrium. Write statements about how adding and removing heat shifts the equilibrium for an endothermic reaction.
determine the enthalpynbsp for the given reaction as cs2 l 2 o2 g rarr co2 g 2 so2 g if given cs o2g rarr co2g
bring 5ml of bromophenol blue to your work station. obtain a P20 Pipetman and record below the digits you see in the window on the side. What volume is the micropipette set to deliver
The standard cell potential () of the reaction below is -0.34 V. The value of for the reaction is __________ kJ/mol. Cu (s) + 2H+ (aq) ? Cu2+ (aq) + H2 (g)
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