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Explain what is the morality of NaOH if 41.67 ml solution is required to neutralize 0.2625 grams of pure H2C2O4*2H20
If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
patients undergoing an upper gi tract lab test are typically givenan x-ray contrast agent that aids with the radiologic
acetyl-coa carboxylase is a key regulatory enzyme in fatty acid synthesis. early studies on the molecular properties of
The Cd2+ was displaced from EDTA by the addition of an excess of CN-. Titration of the newly freed EDTA required 29.2 mL of 0.0120 M Ca2+ . What were the molarities of Cd2+ and Mn2+ in the original solution
Calculate the pH of a 100.0 mL buffer that is 0.158 M HClO and 0.099 M NaClO after adding 1.0 mL of 5.9 M NaOH solution. (Ka for HClO given at 2.9*10^-8 and assume the volume change of added NaOH solution is negligible)
Part A. You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. \rm counts after 93.1minutes , what is the half-life of this substan..
What total volume of ozone measured at a pressure of 29.0mmHg and a temperature of 234k can be destroyed when all of the chlorine from 16.5g of CF3Cl goes through ten cycles of the above reactions?
Calculate the necessary amounts of solutes and solvents to make a 4L bottle of antifreeze that will cause a 35 degree change in the freezing point of water. Solutes are Al2(SO4)3, KBr and Mg(NO3)2
The activation energy for the isomerization ol cyclopropane to propene is 274 kJ/mol. By what factor does the rate of this reaction increase as the temperature rises from 256 to 297 oC.
when 24.0 g of glucose a nonelectrolyte are dissolved in 500. gof water the solution has a freezing point of
The solubility of radium oxalate RaC2O4 in warm water is 0.0174 mols/Liter. Calculate Ksp for this compound. Radium is a 2nd column element somewhere below calcium.
a 10.0l container of helium gas with a presure of 250mmhg at 0 degrees celsius is heated to give a pressure of
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