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Consider the titration of potassium acid phthalate (KHP) with NaOH. If 0.4278g KHP needed 22.86mL of NaOH to reach the phenolphthalein pink end point, explain what is the molarity of the NaOH? Explain molar mass of KHP is 204.22 g/mol.
What are the signs of Hvap and Svap for water. Do you expect the signs of these quantities to be the same for other liquids. Explain.
Explain what is the chemical formula of the diatomic molecule in which 0.314 moles of the substance has a mass of 22.26 grams
What is the % by mass of CaCl2.2H2O in the salt mixture B. how many grams of the excess reactant K2C2O4.H2O reacted in the mixture C. How many grams of the K2C2O4. H2O in the salt mixture remain unreacted
How many grams of dry NH_4Cl need to be added to 2.10 L of a 0.100 it M solution of ammonia, NH_3, to prepare a buffer solution that has a pH of 8.84? K_b for ammonia is 1.8 * 10^{-5}
At what temperature would the rms speed of H2molecule be same?
The solubility of Ar in water at 25 C is 1.6*10^-3 M when the pressure of the Ar above the solution is 1atm. What is the solubitlity of Ar at a pressure of 2.5 atm
it is given that the density of mercuryhg 13.5 gml density of h2o 1.00 gml. determine the barometric pressure of
What is the activation energy for a reaction if its rate constant is found to triple when the temperature is raised from 300 k to 310 k.
Discuss the merits and disadvantages of dispensing a drug as a reacemic mixture or as a single enantiomer.
2H+(aq) + 2Br-(aq) + CO2(g) BrO3-(aq) + 5Br-(aq) + 6H+(aq) Rate = k[Br2] Rate = k[BrO3-][Br-][H+]2 (4th order is RARE!) Exp. What is the rate law? What is the value of the rate constant? Why?
dinitrogen pentoxide decomposes in the gas phase to form nitrogen dioxide and oxygen gas. the reaction is first order
charles flew the balloon for fifteen miles and stayed in the air for a total flight time of 45 mins. the balloon was
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