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Another student titrated a 0.4681 g sample of unknown monoprotic acid with 0.11187 M sodium hydroxide per the procedure in Part II. Utilizing the first derivative curve, determined the equivalence point volume to be 28.76mL sodium hydroxide. a. Compute the number of moles of sodium hydroxide used in the titration. b. Explain how many equivalents of unknown acid were titrated? c. Find out the equivalent mass of the unknown acid
Explain the large disparity in the numerical results pf Part (a). Discuss the advantages and disadvantages of the three energy sources.
An aqueous solution freezes at -3.04 degrees celsius. What is the molality of the solution. Assume that there is no dissociation of the solute and that k_f is 1.5 K * kg/mol.
on the flow sheet below two hydrocarbon streamsa and b of different composition are combined in a mixer to formstream c
using a sample of a compound containing only oxygen and chlorine reacts with an excess of h2 gas to give 0.206 g
Formic acid (HCOOH) is secreted by ants. Calculate [H3O+] for a 7.40E-3 M aqueous solution of formic acid (Ka = 1.80E-4).
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
for a convalent compounds how is the structurebonding of a compound which is molecular different from one which has a
If a gas cylinder has a pressure of 2250 psi at 25 C, what is the pressure in the same gas cylinder at 40 C
Explain why viruses, in physiologic conditions, are capable of packing extremely large amounts of DNA (negatively charged) into their tiny capsids.
A 2.85 -g sample of an unknown chlorofluorocarbon is decomposed and produces 568 ml of chlorine gas at a pressure of 748 mm Hg and a temperature of 298 K. What is the percent chlorine (by mass) in the unknown chlorofluorocarbon
A reaction has a rate constant of 1.27×10?4 /s at 28 degrees C and 0.226 /s at 78 degrees C. Determine Activation Barrier. What is the value of the rate constant at 16 degrees C?
(NH4)2S is a strong electrolyte. Find out the concentration of each of the individual ions in a 0.800 M (NH4)2S solution.
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