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A student examined a 0.2078g sample containing aspirin using 0.1014M NaOH. The student obtained a % purity of 76.1%. Compute the volume of NaOH that is required in order to reach the end point of the reaction. Molar mass for aspirin = 180.16g/mol
How many grams of iron are required to make 2.50 L of aqueous solution containing 8.00 % Iron (III) chloride by mass. The density of the solution is 1.067g/mL
if 77.0 mL of .150 M HCl (aq) is needed to neutralize all the NH3(g) from a 2.25 gram sample of organic material, calculate the mass percentage of nitroge in the sample.
What is the pH of a solution created by mixing 368.0 mL of 0.175 M Hydrochloric Acid, HCl, with 231.0 mL of 0.318 M Sodium Hydroxide, NaOH?
Instead of using two 100ml portions of ether. a single extraction had been carried out using one 200 mL portion of ether. What weight of Z would be contained in the ether solution under these conditions
Determine how much oxygen in grams is formed by the complete reaction of 38.88 of Na2O2.
Solid benzoic acid, C6H5COOH(s), is often used to determine the heat capacity of a bomb calorimeter, because the constant volume heat of combustion of this compound is known with high precision: qV = ?26.434 kJ/g. When a 2.088 g sample of C6H5COOH..
Utilizing the relative rate factors of 1.0:2.5:4.0 for primary: secondary: tertiary hydrogens in 2-methylbutane, Compute the expected composition of the monochlorinated mixture obtained from 2, 4-dimethylpentane.
One of the most common causes of inaccurate melting points is too rapid heating of the melting point bath. under these circumstances, how will the observed melting point compare to the true melting point.
Find the appropiate equilibrium constant (Kp) for the reaction below under the following conditions.
Since phosphate ionization of 2.14, 6.86 and 12.4. you make stock buffer 500mM in 1L. You decide to make one stock pH 6.5 and the other ph 7.2 How many mmols of what type of phosphate componet do you add to each of these buffers?
What is the molar mass of the unknown compound if the solution has a freezing point of -5 oC?
Determine the heat capacity Cp and the molar heat capacity Cp,m of a solid sample from the observation that transferring the sample with n = 4.55 mol from boiling water
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