VCU CHEM301 Su21 Midterm #1 CHEM-301-002-SU2021 - ORGANIC CHEMISTRY I

Analyze the class results below for the density measurements of copper. What is the average density for copper? Calculate the RAD and the percent relative error. Comment on their accuracy and precision. Grams     Volume (mL)169.417    19.1169.155    18.9183.065    20.5174.244    19.6

Answer question number 7 on the attached document

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

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ed Test This test has a time limit of 1 hour.This test will save and submit automatically when th Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. tiple Attempts Not allowed. This test can only be taken once. ce Completion This test can be saved and resumed at any point until time has expired. The timer will emaining Time: 57 minutes, 15 seconds. uestion Completion Status: A Moving to another question will save this response. Question 4 The standard Gibb's Free Energy (AGO) = 18.38 kJ at 25C for the reaction HNO2 2 H+ + NO2-. What is the value of AG if {HNO2} = 0.75 M, {H+} = 0.13M and {NO2-} = 0.07M? %3D %3D %3D Is the reaction spontaneous under these conditions? Moving to another question will save this response.

Bb Take Test: QUI A Ims.uhb.edu.sa/webapps/assessment/take/take.jsp?cours... لا تعيد السمكات إلى ا. . . الاثاد M Gmail O YouTube Human Biology Ch... A Apps Remaining Time: 15 minutes, 04 seconds. * Question Completion Status: 0.5 points Saved Question 6 Find the major product of following dehydration. OH CH3 CH,-CH-CH-CH2-CH3 + H20 CH3 OA CH2=CH-ĊH-CH2-CH3 OCH3 O B. CH3-C=c-CH2-CH3 OC. CH3-C-CH,- -CH2-CH2-CH3 O CH3 OD. CH3-C-CH-CH2-CH3 CH3 CH3-CH=C-CH2-CH3 » A Moving to another question will save this response. Question 6 of 10> .w. MacE

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Question 1 of 20 A barrel of crude oil has a volume of 42 gallons, only approximately 45% of which is processed into gasoline. If your car achieves 32 mi/gal, and you drive 36,000 miles in one year, how many barrels of crude oil are required to run your car for a year? Tap here or pull up for additional resources

Drowser Time Limit: 0:20:00 Time Left:0:15:19 Glenton Morris: Attempt 1 160 40 3.0 Page 1: 140 - 35 3.0 120 10 25 100 2.0 80 60 Z 10 Page 2: 05- 20 0 2. Time is 10 Timetsk 10 Page 3: Of all the graphs shown above, what plot type is correctly represented? O second order Page 4: O no plot shown is valid 4. 1st order 3rd order OL X (W) FON

Construct a simulated 'H NMR spectrum for 1,1-dibromoethane. Drag and drop the appropriate splitting patterns into the boxes on the chemical shift baseline, and add integration values above each signal. Splitting patterns and integrations may be used more than once. Peak heights do not represent integration values. Br Br 1H 3H O ppm 4 3 Answer Bank

Answer the questions using one of the words or phrases from the following list. We suggest that you copy and paste answers as it avoids mis-spellings and typos. Accuracy Precision False positive False negative Detection limit Blank Linear range Spike Limit of quantitation Internal standard Please provide the terms for each definition If a patient does not have COVID, but a test results says that they do? How close your experimental result is to the "true" answer? When you run an unknown and then repeat the analysis after adding a known amount of analyte? When you run a solution known to have a zero concentration of your analyte? The lowest concentration of an analyte which can be reported with an accurate concentration? If a patient does have COVID, but a test results says that they do not? How close multiple sample replicate results are to each other? When you run a solution with a known concentration of a compound which is not your analyte? The lowest concentration of an analyte…

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

Prelab1 Please help with 1-3

es-2021S2 Allison.E CHEM X 2.ga.us/d21/Ims/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=2593077&isprv=&drc%3D1&qi=2478023&cfql=0&dnb%3D08fi lancer O Khan Academy E DeltaMath musictheory.net - E. Ca Desmos | Scientific. g Final Exam Ciara Smith: Attempt 1 D View hint for Question 18 Question 19 (3 points) Explain how OCompound A and Compound B will dissolve in water using the correct vocabulary including solvation, dissociatic n, ionic, and covalent. O Mg Cl CH Compound A Compound B hp 二

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1:14 PM Fri 20 Dec 67% Grade 7 CBE 03/12/2024 (OOW_7D 2024-25 Ms Sunita Harikesh) Activity Hi, Nimish. When you submit this form, the owner will see your name and email address. Teams Assignments * Required Camera Calendar Files ... More Skill: Advanced or complex data representation or interpretation. Vidya lit a candle and covered it with a glass. The candle burned for some time and then went off. She wanted to check whether the length of the candle would affect the time for which it burns. She performed the experiment again after changing something. Which of these would be the correct experimental setup for her to use? * (1 Point) She wanted to check whether the length of the candle would affect the time for which it burns. She performed the experiment again after changing something. Which of these would be the correct experimental setup for her to use? A Longer candle; No glass C B Longer candle; Longer glass D D B Longer candle; Same glass Same candle; Longer glass

O Homework in Chem101 - due Su X My Questions | bartleby ( Periodic Table – Royal Society of how to take a screenshot on an + A learn.maricopa.edu/courses/1132256/modules/items/19018052 CHM151 17003 > Modules > Weeks 8 & 9 - Chapter 7 > Homework in Chem101 - due Sunday night CG 2020 FALL CRED Question 37 of 4 Submit Account Home Complete the balanced neutralization equation for the reaction below: Announcements Dashboa |Modules HCIO-(aq) + CSОН(ag) — rd Concourse Syllabus Courses Grades D2+ N3+ D4+ Cisco Webex Groups 1 2 3 4 7 8 9. Tutoring/Learning Center Calendar Os Do Inbox (s) (1) (g) (aq) History Cs H CI Help • Previous Next » Library 1:03 PM O Type here to search 10/18/2020 +

what is the concentration of the unknown sample using serial diluitions: 0.05M 1.7472nm, 0.025M 0.8569nm, 0.0125M 0.4167nm, 0.00625M 0.1958nm the epsilon value is 0.0101 and l is 1 cm

AutoSave Off Chapter 10 homework Word O Search Julianna Wren JW File Home Insert Draw Design Layout References Mailings Review View Help 8 Share 、A A Aav A 三、三、、三三刻 O Find Calibri (Body) v11 AaBbCcDc AaBbCcDc AaPhC AaBbCcC AaB S Replace Paste BIU ab x, x A ov A - 三=== =、、田 1 Normal 1 No Spac.. Heauing 1 Sensitivity Heading 2 Title Dictate A Select v Clipboard Font Paragraph Styles Editing Voice Sensitivity The K. for the following reaction is 15 at 220 °C. If an equilibrium mixture contains 0.40 M CO and 0.20 M H2, what is the molar concentration of CH4O ? CO (g) + 2H2 (g) CH,0(g) D. Focus age 2 of 4 395 words 以 2:3 72% 11/1 e Type here to search Prise Insert 1> 1>

phs.blackboard.com/webapps/assessment/take/take.jsp?course_assessment_id%3D 36688_1&course_id%3D_31958 1&content_id%3_1130567_1&- 8r 10 13 140 15 16 20 11 12 17 18 19 20 A Moving to another question will save this response. Quèstion 6 Select the statement that is not supported by the following equation: q=0=(mwater)(Cwater)(ATwater)+ (mmetal)(Cmetal)( ATmetal) The total change in heat is the sum of the changes in heat of water and a metal. Energy is conserved. Energy is transferred between water and a metal. Energy is lost during a calorimetry experiment. A Moving to another question will save this response. hp & %23 9. 6. 00 进3

5. Use the MS data to answer the questions on the next page. 14.0 1.4 15.0 8.1 100- MS-IW-5644 26.0 2.8 27.0 6.7 28.0 1.8 29.0 80 4.4 38.0 1.0 39.0 1.5 41.0 1.2 42.0 11.2 43.0 100.0 44.0 4.3 79.0 1.9 80.0 2.6 Relative Intensity 40 81.0 1.9 82.0 2.5 93.0 8.7 20- 95.0 8.2 121.0 2.0 123.0 2.0 136.0 11.8 0 138.0 11.5 20 40 8. 60 a. Br - 0 80 100 120 140 160 180 200 220 m/z Identify the m/z of the base peak and molecular ion. 2 b. Draw structures for each of the following fragments (include electrons and charges): 43.0, 93.0, 95.0, 136.0, and 138.0 m/z. C. Draw a reasonable a-fragmentation mechanism for the fragmentation of the molecular ion to fragment 43.0 m/z. Be sure to include all electrons and formal charges. 6. Using the values provided in Appendix E of your lab manual, calculate the monoisotopic mass for the pyridinium ion (CsH6N) and show your work.

Instructions You are required to produce a short lab report using the information given in the accompanying document, ‘Lab report assessment_student data’. This document introduces an experiment, and also provides a set of experimental data for this experiment. You are required to use this data to perform steps 8 and 9 of the procedure. This includes calculations of a particular value, and then comparison to the true value. Consider any experimental errors when comparing calculated values and true values. Your report should be between 300 and 500 words (including all table contents and titles of tables and graphs). Your lab report should consist of three sections only: • Experimental • Results and Discussion • Conclusion You do NOT need to include an introduction section. Your experimental section should be written in appropriate lab report format, (passive voice, 3 rd person, in paragraphs). Your results and discussion section should contain the data presented in table format, and…

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ESF X empt/quiz_start_frame_auto.d21?ou=9739790&isprv=&qi=11007766&cfql=0&dnb=0&fromQB=0&inProgress=1 ystems Question 5 (1 point) Ben starts walking along a path at 3 mi hr¹. Amanda starts jogging along the same path 1 hour later at 5 mi hr. After how much time jogging does Amanda catch up to Ben? 3.5 hr 2.5 hr 2 hr 16

View History Bookmarks People Tab Window Help S, Amaya K - Outlo x B Chapter 5- CHEM-1110-941- x Question 20 - Chapter 5- Con x education.com/ext/map/index.html?_con%3con&external_browser%3D0&launchUrl=https%253A%252F%252Flms Saved 3 attempts left Check my work Enter your answer in the provided box. It takes 155 s for an unknown gas to effuse through a porous wall and 97 s for the same volume of N2 gas to effuse at the same temperature and pressure. What is the molar mass of the unknown gas? g/mol ... 115 MAR 1664 18 ottv A

Question 10 (Mandatory) 1) Listen> What is the absolute error of the answer for the following operation? (8.12 +- 0.03)-(3.12+-0.02) = 0.04 0.05 0.02 O 0.007

LIS 0 x Cee res te erE O Esoe 2011 O Empower 2021 A educate lindsay.k12.ca.us/iframe.aspx?Ctrl STUDENT BASE HOME CONTROL dsay Bookmarks A Classes O Google Sides O Empower 2020 E Google Docs t Lindsay High School R Phynics Safety & Sk E Guided practice 3L Flag for follow-up Group-12 )436 9 10 11 12 13 14 15 16 17 10 Irerlod The Perlodic Table of the Elements Elements in the same group tend to have similar characteristics, but some things like tendency to gain or lose electrons can still vary even within a group Which of the following is true regarding the elements in group 2? O A Be, Beryllium is the largest and has the greatest tendency to gain electrons. OB Be Beryllium and Ba, Barium will have the same tendancy to lose electrons OC Ra, Radium is the smallest and will have the greatest tendency to lose electrons. O D. Ba, Barium will have a greater tendency to lose electrons than Mg, Magnesium. DELL %23 E S A C

AutoSave Document1 - Word O Search ff retroget R File Home Insert Design Layout References Mailings Review View Help A Share P Comments O Find - E Replace Calibri (Body) - 11 - A A Aav A AaBbCcDc AaBbCcDc AaBbC AaBbCcC AaB Paste I U v ab x, x A - e, v A 1 Normal I No Spac. Heading 1 Heading 2 Dictate Editor Reuse Title A Select Files Clipboard Font Paragraph Styles Editing Editor Reuse Files Voice Calculate the difference between AH and AU when 1.0 mol Sn (gray) of density 5.75 g cm3 changes to Sn (white) of density 7.31 g•cm3 at 10.0 bar. Molar mass of Sn = 118.71 g•mol-!. Page 1 of 1 W English (Malaysia) D. Focus 35 words 100% 8:05 AM W 26°C Mostly sunny 4) a O 08/06/2021

MindTap-Cengage Learning X ISBN 9781305657571&nbld=3576712&snapshotld-3576712&id=1854206... A M req req O Search X Back 2310 g x My Grades-Fall 2023 TTU Introd X A Submit Answer References 237 g Use the References to access important values if needed for this question. A copy of your chemistry textbook is found to have a mass of 2310 grams. Using unit analysis, show what the mass of this copy of your chemistry textbook is in ounces. 12 oz 7. Unit Conversion: Metric/Standard: This is group attempt 1 of 5 Autosaved at 11:14 PM Oz Drag and drop your selection from the following list to complete the answer: 28.3 g 2.20 lb + () 16 oz Q Search this course 454 g Next 4x X C 11:14 10/8/2