Week 2 Postlab report(1) (1)

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…

I need help calculating and setting up questions 4 or 5.   thank you for your help!

2- Lab Report 1 Post-Lab Part A How could you distinguish solution of sodium chloride (table salt) from a solution of sodium iodide (a poison) using an AgNO3 solution? Show reactions. Express your answers as balanced chemical equations. Identify all of the phases in your answer. Seperate the two equations by a comma. > View Available Hint(s) Submit Request Answer Part B Complete previous part(s) Provide Feedback

Hello, I hope you are doing well on this fine day. For the following quetion please read carefully the question and instruction. PLEASE ANSWER QUESTION IN 20 MINTUES NOT MORE PLEASE AND THANK YOU. If you do answer the question correctly and post it in the next 20 minutes, NO NEED TO SHOW ALL THE WORK, I JUST WOULD LIKE THE CORRECT ANSWER AS SOON AS POSSIBLE. I will write a wonderful and generous feedback/review/rating about you. What is the total amount (in mol) of ions in solution when 34.7 g of the ionic solid Ba(OH)2·8H2O completely dissolves in water? The molar mass of Ba(OH)2·8H2O is 315.46 g/mol.

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Hello tutors, need your help. Please..

Carla is using a fertilizer that contains nitric acid. How is nitric acid classified? strong acid weak acid strong base weak base Save and Exit Next Mark this and return ContentViewers/AssessmentViewer/Activit.

Please answer questions 3 and 4 and show work please. Thank you

Need help filling this out. It is the Data Sheet for Ch. 2 Qualitative Analysis. Very much appreciated!

Can you please please please not reject this question. I really need to know this. AND THIS IS NOT A GRADED QUESTION.  So can someone please answer this without rejecting this everytime. I really need to learn how to do the calculations for this becuse I have my exam within 2 weeks. So please someone and this is not a graded question. Okay this time I have included all the information. Molarity is included.  An experiment was conducted by following the procedure below.   Prepare a 50-mL burette for titration. Rinse the clean burette and tip with two 5-mL portions of standardized 0.005 M HCl solution and discard. Fill the burette with standardized   HCl, remove the air bubbles in the tip, and record the initial volume (± 0.01mL).      Record the molarity of the HCl solution, which is 0.005M Cover the flask with parafilm to avoid contact with carbondioxide from air. Rinse a 25 mL pipet with 1 or 2 mL of the saturated Ca(OH)2 solution and discard. Pipet 25 mL of the filtrate into a clean…

board Instructions Please select the best answer for each of the questions. This test has a time limit of 2 hours.This test will save and submit automatically when the time expires. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Timed Test Multiple Attempts Not allowed. This test can only be taken once. Force Completion Once started, this test must be completed in one sitting. Do not leave the test before clicking Save and Submit This test does not allow backtracking. Changes to the answer after submission are prohibited. Your answers are saved automatically. Remaining Time: 1 hour, 34 minutes, 00 seconds. * Question Completion Status: A Moving to the next question prevents changes to this answer. Question 2 What is the pH of the solution which results from mixing 25 mL of 0.20 M CH3CO>H and 25 mL of 0.20 M NAOH? (K, for CH3CO>H = 1.8 x 10-b) OA 8.87 OB. 10.43 OC7.00 OD.9 02 OE 5.13 A Moving to the next question prevents changes to this answer. *- F11…

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Safety is the     responsibility of the TA only.     primary responsibility of everyone in the lab.     last thing to think about when doing lab experiments.     least important thing, basically just trivia for extra credit.     first topic to read about after you do an experiment.

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

hrome File Edit View History Bookmarks Profiles Tab Window Help Watch Gilmore Girls | Netflix ALEKS A ALEKS - Reyna Garc A www-awu.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-IVDWKW BBZZ16tTytly4Fcf Spotify Web Playe... M Common Ethical D.. O CHEMICAL REACTIONS Identifying the limiting reactant in a drawing of a mixture The drawing below shows a mixture of molecules: key carbon hydrogen nitrogen sulfur oxygen chlorine Suppose the following chemical reaction can take place in this mixture: CO(g)+2 H,(9) → CH,OH(9) Of which reactant are there the most initial moles? Enter its chemical formula: Of which reactant are there the least initial moles? Enter its chemical formula: Which reactant is the limiting reactant? Enter its chemical formula: Explanation Check FEB 13

Match each chemical or item with the proper disposal or cleanup method. Not all disposal and cleanup methods will be labeled. damp metal pieces Part B Return to correctly labeled "drying out" beaker. Answer Bank damp metal pieces Part B Place used items in the drawer. calcium chloride solutions Part A Rinse with deionized water, dry as best you can, return to volumetric flask Part A the instructor. volumetric flask Part A metal sheets Part C Return used material to the instructor. damp metal pieces Part B calcium chloride solutions Part A Pour down the sink with plenty of running water. metal sheets Part c volumetric flask Part A Pour into aqueous waste container. damp metal pieces Part B Place used items in garbage.

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This is not an graded assignment please complete 6-9 again NEXT PAGE I POSTED TO SHOW HOW IT SHOULD BE DONE

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.

help please answer 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

3. Standard white vinegar you can buy in the grocery store is 5% concentration. That means 5% of the liquid vinegar is acetic acid and 95% of the solution is water. In a hardware store, you can buy industria strength vinegar, which is 30% concentration. This means that 30% of the vinegar is acetic acid, and the remaining 70% is water. Samuel does another experiment, this time with 5% vinegar and 30% vinegar. He sets up two science fair volcanoes (in no particular order), each with the same temperature, mass of baking soda and volume o vinegar. But one volcano uses 5% vinegar and the other volcano uses 30% vinegar. He measures the volume of gas production for the'first minute of each reaction, and he records the data below. Volcano # 1 Volume of gas produced (mL.) vs. Time (s) for Volcano #1 Time Volume of gas (s) produced (ml) 60 E 50 10 20 30 25 8 40 38 46 30 20 Volume of gas produced (ml) 40 50 50 60 52 of 10 53 20 40 60 80 Time (s) Volcano # 2 Volume of gas Volume of gas produced…

please make sure correct sig figs!!! Please do it neat and clean correctly... posting third time Please do it right please

Supply the missing information in the table. (Given in Blue). Answers in scientific notation should be in this sample format >>> 1.0 x 10-14

tes.You will be notified when time expires, and you may continue or submit. Warnings appear when half the time, 5 minutes, 1 minute, and 30 seconds remain. Multiple Atternpts Not allowed. This test can only be taken once. Force Completion Once started, this test must be completed in one sitting. Do not leave the test before clicking Save and Submit. Remaining Time: 34 minutes, 54 seconds. Question Completion Status: A Moving to another question will save this response. Question 11 The following question pertain to the charting of NMR spectra. MATCH the correct term to the description below. The exact place on the chart at which a nucleus absorbs (i.e. where the peaks are located) is called its high-field or upfield side delta (6) Chemical shift МHZ TMS A Moving to another question will save this response. MacBook Air II F8 000 O00 F9 F7 F6 F5 F4 F3 F2 & $ % # 8 7 6 5 tA4 OOO

Please help me! Just give 3 questions that have the same final chemical reaction answer. I'm stuck on this! Also would be great if you could answer the "ideas" part. Thank you so much!!!

help  please answer 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

Please short answer

Please answer fast i give you upvote.

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.

can someone please help me with my chemistry lab. chemistry is so extensive and i am overwhelmed. i have no idea at this point i am so confused. i will be glad to rate you if you can please help me. i have attached the lab and the sheet i need help with. please show how you solved. PLEASE HELP ME!

Please answer in tipping format for

I need help with this and use model 1 (Not honor class) (Not grading)

I need help constructing graph I m not sure where to put values On the graph paper plot a graph of your reaction rates vs. concentration by using vertical scale or Y-axis representing reaction rate and a horizontal scale or X-axis representing mls of solution #1(KIO3).

Laboratory Questions (edited) Put answers on a separate piece of paper and provide enough room for instructor comments. 1. Based on the procedure of this experiment, explain the effect of the following actions on the assessed masses of the components indicated. Where indicated, also address the effect on the percent recovery (Part D of the experiment). The choices include: lower, higher, no effect or could be higher or lower. If the answer could be higher or lower, provide a detailed explanation. a) Sublimation of NH4CI was not complete. How does this situation affect the calculated mass of NH4CI and the percent recovery? b) While decanting, some of the salty water was spilled onto the lab bench. How does this situation affect the calculated mass of NaCl and the percent recovery? c) While decanting, some of the sand was inadvertently transferred to the second evaporating dish. How does this situation affect the masses of NaCl and sand (SiO2) and the percent recovery? d) While weighing…