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Discuss how much 0.100M NaOH must be added to the 45.0 mL of 0.100M HOAc (Ka for acetic acid = 1.8 x 10^(-5) to give a solution whose pH is 4.30?
A beaker which is having of 25.00 mL of 0.1000 M acetic acid (HOAc, Ka = 1.8 x 10 ^(-5). O.1000 M NaOH is added from a burette. What will be the total solution volume in the beaker, assu
A sample which is weighing 0.3375 g and containing NaHCO3 (84.01 g/mol), Na2CO3 (106.0 g/mol) and inert material is dissolved and titrated with the 0.1014 M HCl.
The solubility of a hydroxide M (OH)2 is 0.0090 g per liter. The molecular weight of M (OH)2 is 150. If 1.0 gram of MSO4 is dissolved in the 500 mL of water buffered at pH 8.50, will a
If this sample is titrated with acid, it is found that 20.10 mL, if this sample is titrated with acid, it is found that 20.10 mL of 0.5310 grams of 0.5010M HCl are required to reach the endpoint.&nb
A silicate mineral which is weighing 0.4700 grams gives an insoluble residue containing both Fe2O3 and SiO2 (159.7 g/mol) weighing the 0.2720 grams. Analysis of the residue shows it to contain
A solution is made by dissolving the 0.40mol isopropanol (C3H7OH) in the 0.80 mol water. Determine the mole fraction of isopropanol?
Explain what would the final temperature of the water resulting from the addition of 20g of steam at the 100(degrees) C to 80g at the 0(degrees)C?
Determine the volume of dry hydrogen formed at the STP if 44.00 mL of hydrogen is actually collected OVER WATER from the above reaction conducted at 22.0 C and 759.2 torr.
If 0.0425 g of Magnesium is reacted with an excess of hydrochloric acid, and determine the volume of at STP of hydrogen gas formed, and explain why it is important to equalize the water lev
Why the freezing point depression measurement of benzoic acid in acetone yields a molar mass of 122 g. This same measurement in benzene yields a value of 242 g.
What is the atomic radius of silver when the silver crystallizes in a face-centered cubic unit cell? A silver atom is at the edge of each lattice point. The length of the edge of the unit cell is 0
At 45*C an ice cube at 0*C was dropped into the 30 grams of water in a cup. At the instant that all the ice melted, the temperature of the water in the cup was 19.5*C. Explain what did the ic
Determine the minimum mass of glycerol (C3H8O3) that must be dissolved in the12.0 mg water to prevent the solution from the freezing at the -26°C?
In some antacids the calcium carbonate is the active ingredient. One of the inert ingredients is silicon dioxide. What are their formulas? Are these compounds ionic or covalent?
Determine the molar mass of the polymer sample? In a study designed to prepare new gasoline-resistant coatings, a polymer chemist dissolves 6.041 g poly (vinyl alcohol) in enough water to make 100.0
Determine the solubility of N2 in water at 25°C and 1.0 atm (kH in H2O at25°C = 7 x10-4 mol/L atm) If a gaseous sample contains 63% N2 by volume.
Determine the vapor pressure lowering of a solution of 4.00 g of aspirin (molecular weight = 180.15g/mol) at 21.2°C in the 75.0 g of methanol (CH3OH). Pure methanol has a vapor pressure
Write down a sequence of reactions that will producem-bromofluorobenzene from benzene. (You will need to produce are nediazonium salt somewhere in the middle of this process.)
Why should there be more of theortho or Para product when isobutyl benzene undergoes nitration with nitric acid and sulfuric acid?
By using the 550. kj of heat a gas sample is heated in a cylinder. A piston compresses the gas, doing 700. kj of work. Determine the change in internal energy of the gas during this process?
A sample of mixed carbonates, Li2CO3 (73.89 g/mol) and SrCO3 (147.63 g/mol), weighed 0.5310 grams. If this sample is titrated with acid, it is found that 20.10 mL of 0.5010 M HCl are required
Consider the following galvanic cell, consisting of a zinc rod immersed in a 0.015 M ZnCl2 solution and a copper rod immersed in a solution of CuSO4 of unknown concentration.
If a platinum electrode is used to indicate the cell potential versus a standard hydrogen electrode, explain what will be the cell potential at the equivalence point?
Aspartame received FDA approval in the1981, but the search for artificial sweeteners has continued. Use the Web to identify if any artificial sweeteners have received the FDA approval since1981.