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assignmentProblemID=142966924&offset3=next CHE154-H Gen Chem II Bronikowski S20 Part A Determine the percent ionization of a 0.245 M solution of benzoic acid (K, = 6.5 x 1) Express your answer using two significant figures. > View Available Hint(s) 1 ΑΣφ ха Хь х IXI X•10" Submit Previous Answers

ⒸMacmillan Learning What is the concentration of a solution made by diluting 45 mL of 6.0 M HCl to a final volume of 750 mL? 80 F3 concentration: $ 4 288 F4 % 5 T F5 ^ 6 MacBook Air F6 & 7 - F7 11 00* 8 DII F8 ( 9 DD F9 O ) O. O F10 P 3) F11 { + r = F12 M delete

v = positive valence, or number of dissociable FW = formula weight (molecular weight), dil where N = desired normality V = desired volume in liters %3D including any water of hydration (1 or replaceable hydrogen ions Pr Problems How much of each of the following chemicals is needed to prepare 1,000 mL of both a 1M and a 1N solution? (Atomic weights: Na = 22.99; Cl = 35.45; Ca = 40.08; S = 32.06; O = 16; H = 1; K = 39.10; C = 12.01; and Al = 26.98). .ב ner Sc 25. NaCl 26.CaCl, 27. CASO4 28.CaSO4 2H,O 29.H,SO4 30. K,CO, 31. Al(OH)3 Ar de W. di fir Problems th How much solute is needed to solutions? (JIro l 1. following

calculate the mass of the distillate_______________ and the density of the distillate.  use the rules of significant figures include units    trail 1   mass of empty graduate cylinder, gm  5.280 grams volume of distillate, ml  3.01 ml mass of cylinder with the distillate, g  7.936 g boiling point of the distillate, C degree 92.1

15 16 17 18 19 20 21 22 23 24 25 26 27 An aqueous solution at 25 °C has a OH concentration of 1. x 10 "M. Calculate the H,O' concentration. Be sure your answer has 1 significant digits. -10 M dh Submit Assignment Continue MacBook Air F12 F9 F10 888 O00 FB 30 F7 F5 F6 esc F4 F2 F3 F1 & @ # $ %3D 4 5 7 8 9 2 3

You are to prepare 100 mL of a solution of formaldehyde of such strength that 10 mL diluted to 1 litre will give a solution containing Formaldehyde 0.15 % w/v. What volume of Formalin BP will be required? (Formalin BP = 36% w/w Formaldehyde; density = 1.08 g/mL) Select one: a. 17.3 b. 38.6 c. 45.0 d. 48.6 e. 22.5

Rutile C Chec C Home Percer Answe Submit b Answe Submit Answer b Home O https://east.cengagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator= assignment-take This question has multiple parts. Work all the parts to get the most points. b Ansvar °C [References] An aqueous solution containing 11.0 g of starch per liter has an osmotie pressure of 4.10 mm Hg at 25 °C. C Chego Blackb a what is the average molar mass of starch? (Because not all starch molecules are identical, the result,will be an average.). Molar mass= 49.860 X g/mol Try Another Version 2 item attempts remaining b what is the freezing point of the solution? (Assume that the molarity and molality are the same for this solution. Kp (H₂O) = -1.86 °C/m.) Freezing point = Conte OWX

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4 ab Would you expect F₂ to be soluble in CBr4 or not? FULLY explain your answer. Edit Format Table esc s lock 12pt Paragraph p A 2 N BIUAV V T²V 3 W E S D X R % 5 F T CV 岬く描く MacBook Pro A 6 Y & B 7 G H G O words * 88 8 N J J

How many mg/m3 is a 6% concentration of CO2.  MW = C= 12  +  O+O = 16+16  at NTP

9 and lear X + keAssignment/takeCovalentActivity.do?locator-assignment-take Submit Answer O If 20.7 grams of an aqueous solution of manganese(II) bromide, MnBr₂, contains 2.86 grams of manganese(II) bromide, what is the weight/weight percent of manganese(II) bromide in the solution? Weight/weight percent= % MnBr2 Q Search [Review Topics] [References] Use the References to access important values if needed for this question. fg Retry Entire Group 9 more group attempts remaining LP-CONdugau fg 144 np f10 ▶H ►►I f12 ✈ + ins prt sc 12 ☆ 100 06 64 0 delete home 57

need number 3 solved but not the others. number 3 isnt .99 so if thats what you get please try again

Part A: Standardization of Potassium Permanganate, KMnO4 Solution Your Data Group I Group II Group III Mass of Na2C2O4 used 0.23 9 0.30 g 0.22g 0249 Initial buret reading Om L 3 mL 0 mL 0 mL Final buret reading 36.6 mL 28 mL 31.3mL 51.1mL Volume of KMnO4 used 36.6 mL 50 mL 31.3 mL 51.1mL 25+25

3:15 PM P w 99+ 4/12/2021 AutoSave Carbox. Acids, Derivatives & Amines-Sp 21.doc - Compatibility Mode - Word cyrine joshan lopez ff CJ File Home Insert Draw Design Layout References Mailings Review View Help A Share P Comments O Find S Replace - A A Aav A EE • E E E ¶ AaBbCcD AaBbCcDc AABBC AaBbCc Times New Romai 12 Paste BIU v ab x, x A e A 三三。 1 Normal 1 No Spac... Heading 1 Heading 2 A Select v Dictate Sensitivity Editor Reuse Files Clipboard N Font Paragraph Styles Editing Voice Sensitivity Editor Reuse Files Navigation Search document 8. What is the name of the following compound? Headings Pages CH2CH3 Results <-CH,CH, ci° ČH2CH3 Create an interactive outline of your document. c. N,N,N-triethylanilinium chloride d. N,N,N-triethylaniline chlorine It's a great way to keep track of where you are or quickly a. N,N,N-trimethylanilinium chloride b. N,N,N-diethylanilinium chloride move your content around. To get started, go to the Home tab and apply Heading styles to the headings in…

ssignment 3 attempts left Check my work Be sure to answer all parts. Starting with a 6.701 M stock solution of HNO, five standard solutions are prepared via serial dilution. At each stage, 25.00 mL of solution are diluted to 100.00 mL. Determine the concentration of and the number of mokes of HNO, in the final (most dilute, M5) solution. M15 = M mol, HNO3 = mol < Prev 11 of 25

LAhen 9 id is Impurc, Its meuting Point is higher and broader Tran the muhing Puint fur pure Sampko , True False

b Answered x Co. How to Ca x N NSU Logir x PeriodicTa XM Action Rec X 0 mySigTau X G 4.25 ml to X NBA Final xG scientific c X + w.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References] In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was filled with hydrogen gas. The hydrogen gas was prepared from iron splints and diluted sulfuric acid. The reaction is Fe(s) +H2SO4 (ag) → FESO4(aq) + H2 (g) The volume of the balloon was 4800 m and the loss of hydrogen gas during filling was estimated at 20.%. What mass of iron splints and 98% (by mass) H2SO4 were needed to ensure the complete filling of the balloon? Assume a temperature of 0°C, a pressure of 1.0 atm during filling, and 100% yield. Mass of Fe = Mass of H2SO4 g Submit Answer Try Another Version 3 item attempts remaining Previous Next Email Instructor Save and Exit Cengage Learning | Cengage Technical Support

How do you find weight of Na2C2O4 in unknown?

13-CH2-O+ nA- WATER SOLUB X bapps/assessment/review/review.jsp?attempt_id= 4910689_1&course_id=_69748_1&content_id= 3071. IVE Round your answer to the second decimal place. Selected Answer: 8.26 estion 8 In an aqueous solution at 25 °C, when the [OH"] > [H3O*] which ONE of the following is true? Selected Answer. The pH is less than 7 and the solution is acidic. Answers! The pH is greater than 7 and the solution is basic. The pH is greater than 7 and the solution is acidic. The pH is less than 7 and the solution is acidic. The pH is less than 7 and the solution is basic. Question 9 in a 11 ratio during a neutralization reaction?

Line equation?

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A solution is made by dissolving 15.9 g of nickel (II) iodide, NiI2, in enough water to make exactly 250 mL of solution. Calculate the concentration (molarity) of NiI₂ in mol/L (M). M NII2 Submit Submit Answer ration Show Approach Show Tutor Steps Retry Entire Group 2 more group attempts remaining Show Hint H HE Previous Email Instructor Next Save and Exit 200

Need help finding the concentrations for each solution