What is the standard entropy change of the reaction below at 298 K with each compound at the standard pressure? N2(g) + 3H2(g) → 2NH3(g) S°298 130.6 298 (J/mol K) 191.5 192.3 -198.7 J/K O 76.32 J/K 303.2 J/K O -129.7 J/K

What is the standard entropy change of the reaction below at 298 K with each compound at the standard pressure? N2(g) + 3H2(g) → 2NH3(g) S°298 130.6 298 (J/mol K) 191.5 192.3 -198.7 J/K O 76.32 J/K 303.2 J/K O -129.7 J/K

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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What is value for x in the equation below? In(3.27x) = 0.72(0.39-0.79) Note: Logarithms and exponentials will feature prominently throughout the course and understanding how to solve these types of equations (and knowing how to use your calculator) is essential. Note: In this course "log" refers to the base-10 logarithm and "In" refers to the base-e logarithm. Remember: if you want to express an answer in scientific notation, use the letter "E". For example "4.32 x 104" should be entered as "4.32E4". Answer:
Example Problem: Consider The Titration of 100.0 mL of 0.200 M CH3NH2 by 0.100 M HCl. Calculate The pH After 65.0 mL of HCl Added. (Kb for CH3NH2 = 4.4 x 10-4): 10.96 - correct answer. 9.75. 7.00. 3.68. 2.54.
When a 0.069 M aqueous solution of a certain acid is prepared, the acid is 1.1% dissociated. Calculate the acid dissociation constant K, of the acid. Round your a answer to 2 significant digits.
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What are the coefficients of NH3 and H2O?___ Al + ___ NO3- + ___ OH- + ___ H2O→ ___ Al(OH)4- + ___ NH3 Group of answer choices 3, 12 4, 18 2,12 3, 14 3, 18
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Determination of unknown acid concentration Trial 1 Trial 2 Trial 3 Unknown Acid number Volume of acid used (mL) 25 mL 25 mL 25 mL Initial buret reading (mL) 50 mL 50 mL 50 mL Final buret reading (mL) 14.8 mL 15 mL 14.5 mL Volume of NaOH used (mL) 50 mL 50 mL 50 mL Molarity of NaOH Calculated molarity of HCl (M) Show a sample calculation of HCl molarity AVERAGE MOLARITY OF Unknown HCl Show a sample calculation of NaOH molarity
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Course Contents » » Homework Set #5 » t02p08 Timer Notes Evaluate Feedback Print Info List the following by ability to ionize, least to greatest. Э Нзвоз, Ка — 7.3х10-10 O HC2H3O2, Ka = 1.8x10-5 Э нСIо, ка — 3.5х10-8 O H2S, Ka %3D 1.0x10-7 O HC,H502, Ka = 6.3x10-5 Submit Answer Tries 0/99 This discussion is closed. Send Feedback
We want to make 400mL of 1x running buffer from the 20x stock. You will add __(ANSWER)___ mL of 20x stock to __(ANSWER)__mL water
Trial 1 Trial 2 Trial 3 Initial burette reading (mL) 2.29 1.41 1.95 Molarity of NaOH (M) 0.100 0.100 0.100 Volume of vinegar sample (mL) 5.00 5.00 5.00 Final burette reading (mL) 50.37 49.39 49.84 Table 2. Titration data Trial 1 Trial 2 Trial 3 Initial burette reading (mL) 2.29 1.41 1.95 Molarity of NaOH (M) 0.100 0.100 0.100 Volume of vinegar sample (mL) 5.00 5.00 5.00 Final burette reading (mL) 50.37 49.39 49.84 Expected color at end point Volume of NaOH used (mL) 48.08 47.98 47.89 Compute for the ff: a. Average moles of acetic acid (mol)? b. Average molarity of acetic acid (M)? c. Average molarity of acetic acid (M)?