Sodium hydroxide is used extensively in acid-base titrations because it is a strong, inexpensive base. A sodium hydroxide solution was standardized by titrating 45.25 mL of 0.1332 M standard hydrochloric acid. The initial buret reading of the sodium hydroxide was 1.03 mL, and the final reading was 32.25 mL. What was the molarity of the base solution? M
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- 5answer the following with explanationThe following equation describes the equilibrium that exists when the weak acid propionic acid (C2H5 CO,H) dissolves in water. (In acting as an acid, the -CO2H group supplies H+ to form H30*.) C2H; CO,H(aq) +H2O(l) 2 H,0+ (aq) + C2 H; CO2-(aq) a Which of the four species are Bronsted-Lowry acids? (Select all that apply.) O H20 O C2H; CO2- O H3o+ O C2H; CO,H b Which of the four species are Brønsted-Lowry bases? (Select all that apply.) O H2O O C2H;CO2 O H30+ O C;H; CO,HLv2 1 On x S Write electre X uzdLQYhAS) X G Predict the t X Periodic Tab X b Answered: [ X 0 mySigTau X M (no subject) X Electronega x + gagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take OC [References] Consider the following reaction: H. H. Br Br C=C (g) + Br, (g) H-C-C-H (g) AH =-92 kJ H. H. H. H. Estimate the carbon-bromine bond energy given that the C-C bond energy is 347 kJ/mol, the C = C bond energy is 614 kJ/mol, and the Br- Br bond energy is 193 kJ/mol. DCBr kJ/mol %3D
- If the pH of an arsenic acid H3AsO4 solution is 4.2, what is the concentration of the arsenate ion AsO43–? (Ka1 = 5.6 × 10–3, Ka2 = 1.0 × 10–7, Ka3 = 3.0 × 10–12) PLEASE SHOW WORK, thank you!please answer 6c, 6d, 6e and 6f. Thank you.9:19 O ul LTE O Review ABookmark MISTRY HONORS 2021-227 of 21 NH3(g) + _ O2(g)→_ N2(g) + _ ,0(g) When the reaction above is completely balanced, the coefficient for NH, will be O A 4 OB 3 OC 5 OD 2 "3 "5 6 8 Q T Y G.
- Pls help me with the following qiestion, explain and make sure its correct, thanks!!S PeriodicTable O ALEKS Link A ALEKS - Rachel West - Learn X K VHL Central | Log in www-awn.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNslkasNW8D8A9PVVfeDXYfPi62JkBwkldleCwaYLxrMRvHHMNJzxvp3tzoq9qlvduyhQv22e8V-CalBlnunLq40CHb.. * E Apps O SYSTEMS OF EQUATIONS AND MATRICES Solving a percent mixture problem using a system of linear equat. A chemical company makes two brands of antifreeze. The first brand is 45% pure antifreeze, and the second brand is 70% pure antifreeze. In order to obtain 170 gallons of a mixture that contains 65% pure antifreeze, how many gallons of each brand of antifreeze must be used? Note that the ALEKS graphing calculator can be used to make computations easier. O gallons First brand: Second brand: I gallons Explanation Check O 2020 McGraw-Hill Education. All Rights Reserved. Terms of Use I Privacy Access Type here to search 6:14 PM 79% 2/2/2020 Lenovo Esc F1 F2 PrtSc Insert F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 %23 4. 6. 8. ab S. G H. Lk Alt Ctrl Alt Home o8 7 IIpurse: A Chemist A Home E OWLY2 A Chapter https://c OWLV2 A My Driv Class AcE Class Ac+ now.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignment-take [Review Topics] [References] Use the References to access important values if needed for this question. The gas phase decomposition of phosphine at 120 °C PH3(g) 1/4 P(g) + 3/2 H2(g) is first order in PH3 with a rate constant of 1.80×102s-1 If the initial concentration of PH3 is 3.14x10 M, the concentration of PH3 will be M after 70s have passed. Submit Answer Retry Entire Group 7 more group attempts remaining Next Cip 近
- A- Consider a silicon crystal at 300° K doped with arsenic atoms. Depending on the following figure, find the equilibrium electron and hole concentration n, and p.. Given n; = 1.45 *10 cm. -E E 0.164eV %3D -E,10:29 PM Mon Oct 18 94% adamson.blackboard.com Question 25 Which of the following reactions would you expect to have a negative AS? ... A Но ... SH B В + SH Br ... Br2 Br + +оосоо ® H LEXP CONT. о.. О ДООООООД I Z ū