An aqueous solution contains 0.31 M hypochlorous acid. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.32 mol NaClO 00.08 mol Ca(OH)2 0.15 mol HC104 0.31 mol Nal 0.32 mol HC104

с ☑Br -Br H+ HO. Дон

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on. substance A B C D chemical symbol, chemical formula or Lewis structure H :O: H | || | H-C-C-C-H H | | H Ar | | H H Ag H H | | H-C-C-C-O-H 1 H | H boiling point (Choose one) (Choose one) (Choose one) X (Choose one 1 (highest) 2 3 4 (lowest) 5

Calculate the Enthalpy (AH, in kJ/mol) for the following reaction from the heat of rxn formation data given below (Hint: Carefully check the state symbols in this reaction): 4 NO (g) + 6 H20 (I) → 4 NH3 (g) + 5 O2 (g) = ? NH3(g) AH, = - 45.9 kJ/mol NO(g) = + 90.3 kJ/mol H20(1) AH 285.8 kJ/mol = - H20(g) AH = - 241.80 kJ/mol f

tertiary hydrogen atoms

Cesium Chloride: Equilibrium Distance 1 point possible (graded) Physical constants that you may need: Elementary Charge e = 1.60218 × 10-19 C Vacuum Permittivity ε0 = 8.85419 × 10-12 C2 Jm Cesium is the most reactive metal in the periodic table. It reacts vigorously with molecular compounds such as water or chlorine gas to produce ionic compounds. The dissociation energy of gaseous cesium chloride into neutral atoms is AEd = 439 kJ/mol. CsCl (g) → Cs (g) + Cl (g) AE = AEd Potential Energy Interatomic distance r k] AEd = 439 mol Estimate the equilibrium distance re in gaseous cesium chloride. Report the value in picometers. lonization energy of cesium: 375.5 k.J mol Electron affinity of chlorine: 348.7 kJ mol pm Submit You have used 0 of 10 attempts Save

11. H Br CI-

Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on.

10:56 1 Question 6 of 20 Submit Which of the following reactions would have the most negative AS° value ? A) N2(g) + 3 Cl2(g) – 2 NCI3(g) B) CaSO, · 7 H20(s) – CaSO,(s) + 7 H20(g) C) K(s) + O2(g) - – KO2(s) D) NH3(g) + HBr(g) NH,Br(s) E) 2H2(g) + O2(g) – 2 H20(g)

ne teaching and lea X Sakai : CHM 094 001 SU21 : Rost x O https://cvg.cengagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References) Use the References to access important values if needed for this question. 1 pt A sample of argon gas collected at a pressure of 0.717 atm and a temperature of 27.0°C is found to occupy a volume of 23.3 liters. How many moles of Ar gas are in the sample? 1 pt 1 pt mol 1 pt 1 pt Submit Answer Try Another Version 10 item attempts remaining 6 1 pt 1 pt on 8 1 pt ion 9 1 pt stion 10 1 pt estion 11 1 pt nestion 12 1 pt Progress: 6/12 items Due Jun 27 at 11:55 PM 778 Mosty ciear 4 W %24 O Type here to search