General, Organic and Biochemistry - Laboratory Manual 3. a) How would you record the following volume measurement on a burette shown in the picture using rules of significant figures? 07 . mL V= b) If the burette was used to dispense a certain amount of solution, and the new volume reading is shown in the picture below, what volume of the solution was dispensed? Use rules of significantfigures and showyour work! 9FD 11 AHUA 12 /0 09/W0 1 #11 mL Vdispensed 1 Show work: DNH UO 61 10 me

General, Organic and Biochemistry - Laboratory Manual 3. a) How would you record the following volume measurement on a burette shown in the picture using rules of significant figures? 07 . mL V= b) If the burette was used to dispense a certain amount of solution, and the new volume reading is shown in the picture below, what volume of the solution was dispensed? Use rules of significantfigures and showyour work! 9FD 11 AHUA 12 /0 09/W0 1 #11 mL Vdispensed 1 Show work: DNH UO 61 10 me

Chemistry for Today: General, Organic, and Biochemistry

9th Edition

ISBN:9781305960060

Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Chapter7: Sollutions And Colloids

Section: Chapter Questions

Problem 7.1E: Many solutions are found in the home. Some are listed below, with the composition as printed on the...

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Many solutions are found in the home. Some are listed below, with the composition as printed on the label. When no percentage is indicated, components are usually given in order of decreasing amount. When water is present, it is often not mentioned on the label or it is included in the inert ingredients. Identify the solvent and solutes of the following solutions: a.Antiseptic mouthwash: alcohol 25, thymol, eucalyptol, methyl salicylate, menthol, benzoic acid, boric acid b.Paregoric: alcohol 45, opium 0.4 c.Baby oil: mineral oil, lanolin there happens to be no water in this solution-why? d.Distilled vinegar: acetic acid 5
Is their a true chemistry defeinition of what "percent by volume means?" If so, can it be described as this definition: Volume/volume percentage (v/v percent) is a measure of the concentration of a substance in a solution. It is expressed as the ratio of the volume of the solute to the total volume of the solution multiplied by 100.
A chemist measured the concentration of a solution three times and obtained the following results (in mol/L): 0.0147, 0.0146, 0.0148. Do the results appear precise, accurate, or neither? Explain. avenge =.0147 (pdimus.co 120 Doy Jine What information would you need for the results to be both precise and accurate? If the true value is 0.0149, calculate the percent error.
Help -ngine.html?ClassID=1440190321 John measures out the required 150 mL of 6% H2O2 in a graduated cylinder. What volume of distilled water will he need to add to get to the desired 300 mL of 3% solution? [? ] mL of dH2O mL dH,O Enter
2 ml 1 ml 1 ml 1 ml 1 ml STOCK solution colored- dye bottle 1 mg/ml A B C D E Volume of water 4ml 4ml 4ml 4ml Dilution ratio Dilution factor Final Concentration 1) What type of Serial dilution is this one ( ?? :?? dilution)?
Profiles 202 X sac/10062554#/10062554/7/-1 hment Score: 3 ion 8 of 10 > Macmillan Learning F3 Tab Window Help E Experiment 11 - Per X D tv mass of KBr : mass of water: C 78.8% $ 4 85 A 0.600 m aqueous solution of KBr has a total mass of 88.0 g. What masses of solute and solvent are present? Q F4 R FO % 5 V F5 11_Melton_Keely - x | T 6 34,121 X MacBook Air F6 Y G I H 5 & 7 B N F7 #06 NEW U 8 Resources W M DII F8 1 K X X ( 9 H F9 0 48% Question 8 of Give Up?. L -0 (((( F10 P V 1 I command option Reminders pill Hint 10 F11 a 8 [ ? 1 + 11 Ch }
1a) 0.1% = ? ug/ml? Only include the number and not any units b) What is the concentration of your stock in ug/ml? Only include the number and not any units c`The molecular weight of tartrazine is 534.4 g/mole. What is the concentration of your stock solution in mM? Be sure to give your answer in milliMolar to TWO decimal places. d)What dilution of your stock do you need to get the first standard (100 ug/ml)? Express as 1:x, where x is the fold dilution needed.
1a) 0.1% = ? ug/ml? Only include the number and not any units b) What is the concentration of your stock in ug/ml? Only include the number and not any units
$ F4 An aqueous solution of 2.87 M hydrochloric acid, HCl, has a density of 1.05 g/mL. The percent by mass of HCl in the solution is %. Submit Answer % 5 T G F5 Retry Entire Group 9 more group attempts remaining 6 Cengage Learning | Cengage Technical Support Y H [Review Topics] [References] Use the References to access important values if needed for this question. MacBook Air F6 & 7 gilinent-take F7 8 00 1 DII FB K ( 9 F9 0 L ) O A F10 P Chapter Previous + 11 X Next ☐ Save and Exit OWLY S deles
1. How many milliliters of concentrated hydrochloric acid, 38% (wt/wt), specific gravity 1.19, are requiredto prepare 1 L of a 0.100 M solution? Assume density and specific gravity are equal within threesignificant figures. (H-1.008 amu, Cl-35.45 amu) 2. A 0.456-g sample of an ore is analyzed for chromium and found to contain 0.560 mg Cr2O3.Express the concentration of Cr2O3 in the sample as %w/w.
Density of solution:Trial 1: 1.2 g/mLTrial 2: 1.2 g/mLTrial 3: 1.2 g/mL Average density = 1.2 g/mL What is the relative average deviaion, %?
Complete the table by entering the molarity of B2- for each standard solution. Show an illustrative calculation for tube ‘A’. Use the dilution formula and express each result to one more digit than allowed by applying the rules of significant figures. Standard Volume of stock B2- solution taken, mL Molarity of dilute B2 Construct a graph of Absorbance vs. molarity of B2- in Excel using the data in the preceding table. Make certain to title the graph and include axes labels with proper units. Absorbance is dimensionless (has no unit). Add a linear trendline to the graph but do not set the y-intercept to zero Solid M2B is added to 25 mL of water, the resulting mixture is continually stirred for 1 hour. At this point, it is assumed that equilibrium (eqn 3) has been established. The mixture is transferred to a test tube, and the test tube is centrifuged to assure that any residual solid M2B is fully settled out. A portion of the supernatant in the test tube is carefully…