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A Brand X antacid tablet was analyzed by a student following the procedure used in this experiment. The stdent dissolved the tablet in 25.00 ml of a standardized HCL solution containing 1.627 x 10-2 mol of HCL. The back-titration of the excess HCL required 7.83 ml of 1.035M NaOH solution.
a. Calculate the molar concentration of the HCL solution that the student used.
b. Calculate the number of moles of HCL neutralized by the antacid tablet.
When the solvent is removed from a sample solution, 3.0 mole of substance B, 7.5 moles of substance C, and 15.0 moles of substance A are left in the solution. What is the mole fraction of substance A in this new solution?
acetic acid has a Ka of 1.8x10^-5. what is the pH of a buffer solution containing .15 M CH3COOH(acetic acid) and .15 M CH3COO^-?
calculate theformation constant forAg(S2O3)23- . Show yourcalculations with units and the correct number of significantfigures.
a 0.1000m solution of ethanoic acid hc2h3o2 is only partially ionized so that h2.25x10-3m. what is the acid
Given the following set of reations and their associated heats of reactions calculate delta H for the following reaction: 2NH3(g) + 3N2O(g)
Calculate the molecular rms speeds of He atoms at 10, 100, 1000 K in units of meters per second and miles per hour.
gold bars are plated from an aqueous solution of gold chloride (AuCl3) by using a current of 50 Amperes. With this current, how long would it take to plate out a 1 pound bar of gold worth almost $ 25,000? 453.59 grams weigh a pound.
The enzyme triose phosphate isomerase catalyzes the isomerization of dihydroxyacetone phosphate. What is the product of this reaction
Calculate the osmotic pressure of a solution containing 24.9g of glycerin (C3H8O3) in 238.0mL of solution at 300 K.
What mass of CCl2F2 must evaporate in order to freeze 115 g of water initially at 21 C? (The heat of fusion of water is 334 J/g the specific heat of water is 4.18 J/g *K .)
With acid-catalyzed condensation of a molecule with two aldehyde groups that is suitable for forming 5- or 6-membered rings, are both carbonyls protonated right away at the same time
Calculate [Cr3+] in equilibrium with Cr(OH)4- when 0.01 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at pH 10.0
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