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If 15.0 mL of glacial acetic acid (pure HC2H3O2) is diluted to 1.70 L with water, what is the pH of the resulting solution? The density of glacial acetic acid is 1.05 g/mL
25mL of a .10M solution of the weak acid hydrofluoric acid, HF, is titrsted with .10M solution of the weak base amonia, NH3. Will the pH at the equivilance point be less than 7 equal to 7 or greater than 7? Explain. Ka for HF is 7.2e-4 and Kb for ..
A chemist wants to make 5.5L of a 0.280M CaCl2 solution.What mass of CaCl2 (in g ) should the chemist use
calculate the number of PCl3 molecules formed when 97 P4 molecules and 606 Cl2 molecules react?
A lab rat weighs 265g and absorbs 1.68x10^10 beta decay particles, each with ernegy of 2.20x10^-13 J. If relative biological effectiness is 0.75, what is the equivalent dose?
At 25?°C, the vapor pressure of diethyl ether is higher than the vapor pressure of its isomer n-butanol, because A. diethyl ether has a higher density than n-butanol.
NaHCO3 is added until the fizzing due to the formation of CO2(g) ceases. If 27.0 mL of 6.0 M H2SO4 was spilled, what is the minimum mass of solid NaHCO3 that must be added to the spill to neutralize the acid?
A sample containing 0.0250 M concentration of a dye in a cell of 1 cm^2 cross section has a measured absorbance of 1.012 at 650 nm.
A compound is composed of elements C, H, and N. A 7.875-mg sample of the unknown compound was combusted, producing 21.363 mg of CO2 and 6.125 mg of H2O. What is the empirical formula for this compound? (Type your answer using the format CxHyNz for..
What would you expect to observe when adding one drop of iodine-potassium iodine reagent to each of the four carbohydrates?
The molecular weight of the protein is 3.4e4 grams per mole. What is the molar concentration of the protein?
Write a chemical equation describing the condensation process for CO2 and a chemical equation describing the freezing process for CO2. For each process discuss the change in enthalpy and entropy that occurs.
Write a balanced titration reaction. (b) Write two different half-reactions for the indicator electrode.
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