A 100.0 mL sample of 0.200 M aqueous hydrochloric acid is added to 100.0 ml of 0.200 Maqueous ammonia in a calorimeter whose heat capacity (excluding any water) is 480.0 J/K. Thefollowing reaction occurs when the two solutions are mixed.HCl(aq)+NH,(aq)—NH_Cl(aq)The temperature increase is 2.34 °C. Calculate AH per mole of HCI and NH, reacted.Select one:оa. -1.96 KJ/molb. 154 KJ/molOc. 485 KJ/mold. 1.96 KJ/molJme. -154 J/mol

Step 1: Given the information:Two solutions are mixed:HCl(aq) + NH3(aq) → NH4Cl(aq)Volume of…

Answered: A 100.0 mL sample of 0.200 M aqueous…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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The answer is 0.05% sodium bicarbonate, 0.05% dextrose Please show your work
Release of drug from a 20mm gel cube (B) was tested by placing it in a large dissolution apparatus containing a buffered solution into which the drug (A) was extracted. 4 of the sides are sealed, while 2 opposite sides are not. If Xp = 0.4, and DAB = 1.8 x 10-6 cm2/s, what ist (hr)?
The Ksp values of silver chromate Ag2CrO4 and silver iodate Ag(IO3) are given below. Ag2CrO4 Ag(IO3) Ksp 1.12 x 10-12 3.17 x 10-8 Based on these Ksp values, which of the following is true? Choose one option only. Options: a. In the solution consisting of 1.00 x10-4 M Ag+ and 5.00 x10-5 M CrO42-, Ag2CrO4 precipitate will form. b. In the solution consisting of 1.0 x10-4 M Ag+ and 1.0 x10-4 M IO3-, Ag(IO3) precipitate will form. c. In pure water, the solubility of Ag2CrO4 is lower than the solubility of Ag(IO3). d. In the solution consisting of 0.200 M CrO42- and 0.200 M IO3-, Ag2(CrO4) will precipitate first if we add Ag+ ions gradually into the above mixture.
Complete the following precipitation reactions using balanced chemical equations:
Sodium carbonate is a reagent that may be used to standardize acids in the same way that you have used KHP in this experiment. In such a standardization it was found that a 0.498 -g sample of sodium carbonate required 21.7mLmL of a sulfuric acid solution to reach the end point for the reaction. Na, CO, (aq) + H₂SO (aq) - H₂O(l) + CO₂ (g) + Na SO (ag) What is the molarity of the H, SO? 2 3 2 4 2 2 2 2 4 Sodium carbonate is a reagent that may be used to standardize acids in the same way that you have used KHP in this experiment. In such a standardization it was found that a 0.498-g sample of sodium carbonate required 21.7 mL mL of a sulfuric acid solution to reach the end point for the reaction. Na2CO3(aq) + H2SO4(aq) + H2O(l) + CO2 (g) + Na2SO4(aq) What is the molarity of the H2SO4? ΜΕ ΑΣΦ Submit Request Answer ? M
Two solutions, 250.0 mL of 1.00 M CaCl2(aq) and 250.0 mL of 1.00 M K2SO4(aq), are combined, and the temperature decreased by 2.40 degrees C. Determine qrxn per mole of CaSO4(s) formed in the reaction. A) +12.0 kJ/mol B) -12.0 kJ/mol C) +6.00 kJ/mol D) -6.00 kJ/mol
A sample of steel weighing 2.00 g is analyzed for Cr (AW 52.0). The Cr is oxidized into chromate with alkaline permanganate and the excess permanganate is destroyed. A certain volume of 0.120 M FeSO4 is added to the acid solution and the excess is titrated with 0.0220 M KMnO4, requiring 31.0 mL. If the sample contained 0.50 % Cr, what volume (in mL) of FeSO4 was added?
Describe the preparation of 2.00 L of 0.100 M glycine buffer, pH 9.0, from glycine and 1.00 M NAOH. What mass of glycine is required, and what volume of 1.00 NaOH is required? The appropriate pK, of glycine is 9.6.
The decomposition reaction of atmospheric peroxyacetylnitrate (PAN) to products was studied, and the following rates were obtained. Temperature, °C Rate constant, s1 0.00 5.60 x 10-6 10.0 3.20 x 10-5 20.0 1.60 x 10 4 30.0 7.60 x 10-4 43. Fit this data into the Arrhenius equation. Give the values of the following: Slope = ( Select ) y-intercept = I Select] Pearson coefficient (R) = [ Select ] activation energy of this reaction in kJ/mol = [Select ] collision frequency factor A = I Select]
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1

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