Lab 3 notes

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In an experiment with an Ostwald Viscometer, the times of flow of water and toluene are 45 s and 32.9 s respectively at 30°C. The density of water is 1.002 g/cc. Calculate the density of the toluene in g/ml. (µwater = 0.8916 %3D cP, utoluene = 0.5239 cP) Use 4 decimal places. 0.8853 0.8053 O 0.8080 O 0.8882

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Number 20 through 29 for dimensional analyis

The proton NMR spectrum of a compound, C3H6Cl2, has a pentet at d 2.19 and a triplet at & 3.72 with a 1:2 integration ratio, respectively. Which compound below best matches the data? A) CH₂CH₂CHC1₂ B) CICH₂CH₂CH₂C1 C) CH3CHCH₂C1 Cl C1 D) CH3CCH3 C1

Part A: Basic Laboratory Operations Density of a Solid TRIAL 1 TRIAL 2 Mass of solid (g) 19.761 g 19.763 g Volume of water (cm³) 75.0 cm^3 75.0 cm^3 Volume of water and solid (cm³) 78.0 cm^3 78.0 cm ^3 Volume of solid (cm³) 3.0 cm^3 3.0 cm^3 Density of solid (g/cm³) 7.0 g / cm^3 7.0 g / cm^3 Average density of solid (g/cm³) 7.0 g / cm^3 Identity of solid Zinc metal [Density = 7.133 g/cm^3] 1. Density of Zinc: Consider the data and results from the density of zinc determination. Now focus on the average absolute error associated with the calculated average density of zinc. Which measurement contributes the most relative error to this value? Given that measurement and its associated absolute error, is the calculated average absolute error reasonable and why? What aspect of the experiment limited the measurements the most?

Ba(NO,l(aq) + K,SOlaq) Baso(s) + 2 KNOlaq) Volume Volume Trial 0.10 M Ba(NO)2 (ml) 0.10 M K,SO, (ml) Mass Baso4 (s) Limiting Reagent 50. 20. 0.46 50. 40. 0.92 3 50. 50. 1.15 4 50. 60. 1.15 50. 80. 1.15 • Question 8 Use the data to identify the limiting reagent for each reaction performed. V Trail 1 a. Neither/Both EV Trial 2 b. Baso4 EV Trial 3 C. KSO4 EV Trial 4 d. Ba(NO3)2 EV Trial 5 e. KNO3 Question Help: Message instructor I Calculator Submit Question • Question 9 Why is the amount of precipitate in the Data Table above the same in Trials 3 through 5? Edit Insert Formats B IVX x' A

ent arch X Aktiv Chemistry ADD FACTOR x( ) 4.82 × 104 10¹2 A laser pulse is 4.82 x 10-2 milliseconds How many nanoseconds is this? 10-⁰ 4.82 x 10-8 10⁰ ns 10 º 4.82 × 10² X Question 30 of 31 4.82 x 10-14 ART ms PeopleSoft session expired 10-12 4.82 x 10-5 10⁰ ANSWER 4.82 x 1016 4.82 x 10-² 4.82 x 101⁰ min 1015 X ? Anthropology and Archaeolo X μs 10³ 4.82 × 10-11 RESET 5 10-3 P 1

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Determine the volume of a sample of copper in (m³) with a mass of 2.2 x 105 tons and a density of 8.96 g/cm. (1 ton = 2205 lbs, 1 lb = 16 ounces, 1 kg = 2.20 lbs,1 kg = 1000g. 100 cm = 1m) %3D %3! %3D

Part c

in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working!!!!!!!

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Please answer fast it’s very important and urgent I say very urgent so please answer super super fast please For the image attached For 1. a Mass of metal: Trial 1 is 35.0228 g Trial 2 is 35.0915 g Trial 3 is 34.0821 g Mass of water: Trial 1 is 20.0177 g Trial 2 is 20.0250 g Trial 3 is 20.0168 g For delta t of water: Trial 1 is 15.5 C Trial 2 is 15.7 C Trial 3 is 15.1 C For delta t of metal Trial 1 is 80.1 C Trial 2 is 80.2 C Trial 3 is 79.5 C For B my calculated Specific heat is: Trial 1 is 0.462 Trial 2 is 0.467 Trial 3 is 0.466

4,6,7,8) Question 19 of 20 (5 points) Question Attempt: 1 of 1 Time Remaining: 30:47 Hannah 10 = 11 = 12 =13 =14 =15 = 16 17 18 19 20 Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical equation. Be sure the equation you submit is balanced. (You can edit both sides of the equation to balance it, if you need to.) do Note: you are writing the molecular, and not the net ionic equation. - CaBr, (aq) + H,O(1) Submit Assignment Continue Accessibility Privacy Center 2021 McGraw Hill LLC All Rights Reserved. Terms of Use II

A bedroom has a volume of 108 m^3. What is the volume in centimeters cubed (cm^3)?

A districtims.seattleschools.org/common-assessment-delivery/start/4832899123?action3Donresume&submissionld%3D490555142 Element A Element D Element X Element Z Mixture 750 700 650 600 550 500 450 400 Wavelength (nm) Use the picture above to determine what is in the mixture. Choose all the elements that are present in the mixture. V Element A OElement D O Element X O Element Z 1. 2.

Chrome File Edit View History Bookmarks People Tab Window Help 89% Mon 9:32 PM Student Students Homework DUE Monday, April X Madeline Carlo - CHM 112 HW X + A docs.google.com/document/d/10m8ZGoSGXKFFcl4KWhwOLh8bFpbtPAmvTWjJPnj15U4/edit Madeline Carlo - CHM 112 HW DUE Monday April 12, 2021 ☆ D TURN IN Share File Edit View Insert Format Tools Add-ons Help Last edit was 3 days ago 100% Normal text Arial 11 B IU A Editing 31 1 III I 3 III I 4 III| I 5 II II I 7 II I| .1. Refer to the table of standard reduction potentials. Standard Reduction Potentials at 25 C Reduction Half-Reaction (V) FAg + 2 € H2O{aq) + 2 H*(aq)+ 2 6 Mno,taq) + 8 H*(aq) + 5 & Clalg) + 2 e CrOFMaq)+ 14 H*(aq) + 6 6- Ozlg + 4 H*(aq) + 4 & Bra() + 26 Ag*(aq) + e Fe*(aq) + e Ozl9) + 2 H'(aq) + 2 € 2(s)+ 26 Ozlg) + 2 HO) + 46 Cu (aq) + 2 € Sn" (ag)+ 2 6 2 P(aq) 2 H2O() → Mn(aq) + 4 H;0() →2 cr(aq) 2 Cr (aq)+ 7 H0() →2 HO() 2 Br(aq) Ag(s) » Fe*(aq) →H;Oz(aq) →2 F(aq) →4 OH"(aq) 2.87 1.78 1.51 1.36 1.33 3. 1.23 1.09 0.80 0.77…

Chrome File Edit View History Bookmarks People Tab Window Help 74% Sat 2:20 PM Kayley Valentine OneLogin x O Microsoft Office Home Content New Tab AALEKS-Kayley Valentin x A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-IgNsikr7j8P3jH-IBI5ahvJxLWwcNXdqGDIniqicnbb-P2iXO0filILEyqsWt8DxNO... E Apps HPrechecks: Test 2. O MATTER Calculating mass density Try again. Kayley v A chemist v v as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of pentane, dimethyl sulfoxide, acetone, methyl acetate, and chloroform. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from his collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density 0.63 mL pentane db dimethyl sulfoxide 1.1 0.79 acetone 0.93 mL methyl acetate 1.5 chloroform 3 Next, the chemist measures the volume of the unknown liquid as 1797.…

Chrome File Edit View History Bookmarks People Tab Window Help 89% Mon 9:33 PM Student Students Homework DUE Monday, April X Madeline Carlo - CHM 112 HW X + A docs.google.com/document/d/10m8ZGoSGXKFFcl4KWhwOLh8bFpbtPAmvTWjJPnj15U4/edit Madeline Carlo - CHM 112 HW DUE Monday April 12, 2021 ☆ D TURN IN Share File Edit View Insert Format Tools Add-ons Help Last edit was 3 days ago 100% В IUA Normal text Arial 11 + Editing 31 1 III I III 1 I 2 3 1 I 4 5 II II 6 1 III | .5. For a reaction in which E° = -0.100 V and n = 1 mol electrons / mol, calculate AG°. State + your assumptions, if any, about temperature. .6. For a reaction in which E° = 0.100 V andn = 1 mol electrons / mol, calculate AG° at 25°C. Dictionary CC Aa ... !!! II III

Chrome File Edit View History Bookmarks People Tab Window Help 89% Mon 9:33 PM Student Students Homework DUE Monday, April X Madeline Carlo - CHM 112 HW X + A docs.google.com/document/d/10m8ZGoSGXKFFcl4KWhwOLh8bFpbtPAmvTWjJPnj15U4/edit Madeline Carlo - CHM 112 HW DUE Monday April 12, 2021 ☆ D TURN IN Share File Edit View Insert Format Tools Add-ons Help Last edit was 3 days ago 100% В IUA Normal text Arial 11 + Editing 31 1 III I III 1 I 2 3 1 I 4 5 II II 6 1 III | MnO, (aq) + 8H*(aq) + 5e → Mn²*(aq) + 4 H,O(1) Al(s) → Alš*(aq) + 3 e + .ЗА. Assign oxidation numbers to all metals whether they be elemental, monatomic ion, or in a polyatomic ion, in questions (1) and (2), .3B. Tell what is being oxidized and what is being reduced in each reaction in questions (1) and (2). .3C. Identify each half-reaction in question (2) as oxidation half-reaction or reduction half-reaction. .4. Do you need to know the temperature to calculate AG° from E°? Explain. > Dictionary CC Aa ... !! II

S People Tab Window Help 14% O Sun 9:41 PN ngage Learning Online Asse x * MindTap - Cengage Learning evo/index.html?deploymentld%=55750828934189288909969212&elSBN=9781305657571&nbld%3D2199898&snapshotld... ☆ Tp INDTAP Q Search this cou Use the References to access important values if needed for this question. A sample of gas contains 0.1118 mol of H2(g) and 5.590×10² mol of O2(g) and occupies a volume of 8.55 L. The following reaction takes place: 2H2(g) + O2(g)–2H2O(g) Calculate the volume of the sample after the reaction takes place, assuming that the temperature and the pressure remain constant. Submit Answer 5 question attempts remaining

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5. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the percent relative error if the total volume of titrant is a. 50.00 mL b. 10.00 mL 6. From the Gaussian (normal) error curve, what is the probability that a result from a population lies between 0 and +1 σ of the mean? What is the probability of a result occurring that is between +1 σ and +2σ of the mean?

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