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How many joules of energy are produced when 3.0 x 10-28 kilograms of mass are lost? (1 J = 1 kg m2/s2)
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Lab Report
To obtain n-butyl acetate from the azeotropic distillation of water. Acetic acid and butanol are used to form the n-butyl ...
Lab Report
To obtain n-butyl acetate from the azeotropic distillation of water. Acetic acid and butanol are used to form the n-butyl acetate with reaction Dowex ...
SNHU Travel Software Question
Overview
On an agile team, the tester’s role goes beyond merely testing for bugs. One of the key responsibilities of the ...
SNHU Travel Software Question
Overview
On an agile team, the tester’s role goes beyond merely testing for bugs. One of the key responsibilities of the tester is to work closely with the Product Owner, ensuring that test cases evaluate the needs outlined by the user stories. Identifying ambiguity in the user stories and developing scenarios to meet the acceptance criteria helps ensure that the development team will deliver the desired product. The tests that are developed could become part of the acceptance criteria for a story, or possibly another story in the Product Backlog.
Prompt
Part I: Initial Test Cases
Develop a detailed test case for each of the three user stories that you submitted in Module Three. Be sure to use the CS 250 Module Four Test Case Template Spreadsheet to complete this assignment. The first sheet of the template includes a sample test case for you to use as a guide in writing your test cases.
For each case, be sure to:
Include a descriptive name for each test case.
Identify detailed steps that will need to be taken by the user to complete the action identified in the user story.
Indicate clear pass/fail measures for each step.
Part II: Revising Test Cases
While developing the test cases, it is typical to find that you need more information or clarification from the Product Owner. Read a sample tester's email to the Product Owner requesting clarifications of the user stories for the SNHU Travel project: CS 250 Module Four Tester Email PDF. (Note: The order of the user stories in the email may not match up with your order, but the content of the user stories should be fairly close).
Next, you will review the wireframe supplied by the Product Owner in response to this email. To do this, download the SampleSlideShow ZIP file to your computer. Right-click on the folder and select “Extract All…”. In the unzipped folder, find and run the Top Destinations Slide Show JAR file. You will notice that this wireframe is a newer “Slide Show” format, which means you will need to make adjustments to your initial test cases as the user’s actions will change.
You will add on to the same template to complete this assignment. For each case, be sure to:
Copy each of your original test cases into the “revised test case” sheets in the template. Preserve the same names that you used originally.
Revise the steps taken by the user to complete the action identified in the user story.
Indicate clear pass/fail measures for each revised step.
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered ...
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered: 24.93 mL Mean deviation: ± 0.13 mL The pipette they used was a 25.00 mL pipette, with a manufacturer’s mean deviation claim
of ± 0.06 mL. a) Is mean deviation a measure of accuracy or precision? i.e. does the mean deviation
reflect how far the result is from the true value (accuracy) or how far the values are
from each other (precision)? b) Comment on this student’s results with respect to accuracy and precision. Question 2 – Titration a) Will the concentration of the sulphuric acid, H2SO4, in the conical flask (receiving
vessel) be the same as that of the sample in the beaker that you collected from the
servery? Does this matter? Why/Why not? b) Calculate a mean (average) value for the titre values you have chosen. Justify any
exclusions you have made. c) The equation for the acid-base neutralisation reaction you perform in each titration is
given below. Balance this equation.
H2SO4(aq) + NaOH(aq) ⇋ Na2SO4(aq) + H2O(l) e) The ratio of the number of moles of H2SO4 to NaOH required for reaction (nacid:nbase)
is given by the balanced equation. Using your balanced equation and the value of
number of moles of NaOH you have just calculated (number of moles = 6.85), what is the number of moles of
H2SO4 in the conical flask?
f) Rearrange the equation n = cxV to calculate the concentration of your H2SO4 solution.
g) Obtain the true value from the servery and compare this to your own experimentally
determined concentration.
2 pages
Gram Positive
• This completed sheet turned in using the Canvas submission link “Gram Positive Case List the media that was used for ...
Gram Positive
• This completed sheet turned in using the Canvas submission link “Gram Positive Case List the media that was used for the following tests for the ...
Chemistry Cobalt Complexes & Le Chateliers Principle Lab Report
AssignmentComplete the ChemCollective lab.View the orientation video to learn how to use the ChemCollective website.After ...
Chemistry Cobalt Complexes & Le Chateliers Principle Lab Report
AssignmentComplete the ChemCollective lab.View the orientation video to learn how to use the ChemCollective website.After watching the video, go to the Cobalt Chloride and LeChatelier's Principle lab (Links to an external site.) http://chemcollective.org/vlab/85 on ChemCollective.Follow the instructions in the PDF that is provided below.Complete the Excel Spreadsheet download.Write a short discussion (instructions are in the PDF)This file is downloadable: cobalt_BYH.pdf downloadMinimize File PreviewFor help with ChemCollective and with the Excel sheet, you can view the video below. You need to conduct the experiment on the ChemCollective simulator, so I have blurred out some sections in the video.Discussion: Color changesUses experimental observations to explain whether color changes observed in steps 1-4 consistent with Le Chatelier’s Principle?10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeDiscussion: Endothermic or exothermicUses description of results to explain whether the reaction (as written in the Background) endothermic or exothermic.10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeDiscussion: KcUses quantitative experimental results to explain whether changing the concentration of reactant or product change the equilibrium constant for a reaction?10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeDiscussion: Effect of temperature on KcUses quantitative experimental results to explain whether hanging the temperature of a reaction change the equilibrium constant?Uses quantitative experimental results to explain temperature affects the equilibrium constant for an endothermic reaction? (or how does temperature affect the equilibrium constant for an exothermic reaction?)10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeAnalysis and FormatDiscussion is written in complete sentences and in paragraph form.Results were adequately recorded and calculated correctly.Solution Equilibria: Cobalt(II) complex ionsIn this section, you will examine an equilibrium reaction that occurs in solution. The reaction examined will use something called a complex ion. Many transition metal ions can form bonds with electron rich compounds or ions. These complexes often exhibit different colors, depending on what is bound. In this simulation, we will examine the reaction between hexaaquacobalt(II) ion in equilibrium with tetrachlorocobaltate(II) ion. The cobalt(II) ion bound to water is a pink color where as the cobalt(II) ion bound to chloride ions is blue.Co(H2O)2+6(aq)+4Cl−(aq)⇀↽CoCl2−4(aq)+6H2O(l)Co(H2O)62+(aq)+4Cl−(aq)↽⇀CoCl42−(aq)+6H2O(l)Image Credit: http://www.docbrown.info/page07/transition07Co.htmWatch the following video for see what the equilibrium looks like in a real lab setting.
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Most Popular Content
5 pages
Lab Report
To obtain n-butyl acetate from the azeotropic distillation of water. Acetic acid and butanol are used to form the n-butyl ...
Lab Report
To obtain n-butyl acetate from the azeotropic distillation of water. Acetic acid and butanol are used to form the n-butyl acetate with reaction Dowex ...
SNHU Travel Software Question
Overview
On an agile team, the tester’s role goes beyond merely testing for bugs. One of the key responsibilities of the ...
SNHU Travel Software Question
Overview
On an agile team, the tester’s role goes beyond merely testing for bugs. One of the key responsibilities of the tester is to work closely with the Product Owner, ensuring that test cases evaluate the needs outlined by the user stories. Identifying ambiguity in the user stories and developing scenarios to meet the acceptance criteria helps ensure that the development team will deliver the desired product. The tests that are developed could become part of the acceptance criteria for a story, or possibly another story in the Product Backlog.
Prompt
Part I: Initial Test Cases
Develop a detailed test case for each of the three user stories that you submitted in Module Three. Be sure to use the CS 250 Module Four Test Case Template Spreadsheet to complete this assignment. The first sheet of the template includes a sample test case for you to use as a guide in writing your test cases.
For each case, be sure to:
Include a descriptive name for each test case.
Identify detailed steps that will need to be taken by the user to complete the action identified in the user story.
Indicate clear pass/fail measures for each step.
Part II: Revising Test Cases
While developing the test cases, it is typical to find that you need more information or clarification from the Product Owner. Read a sample tester's email to the Product Owner requesting clarifications of the user stories for the SNHU Travel project: CS 250 Module Four Tester Email PDF. (Note: The order of the user stories in the email may not match up with your order, but the content of the user stories should be fairly close).
Next, you will review the wireframe supplied by the Product Owner in response to this email. To do this, download the SampleSlideShow ZIP file to your computer. Right-click on the folder and select “Extract All…”. In the unzipped folder, find and run the Top Destinations Slide Show JAR file. You will notice that this wireframe is a newer “Slide Show” format, which means you will need to make adjustments to your initial test cases as the user’s actions will change.
You will add on to the same template to complete this assignment. For each case, be sure to:
Copy each of your original test cases into the “revised test case” sheets in the template. Preserve the same names that you used originally.
Revise the steps taken by the user to complete the action identified in the user story.
Indicate clear pass/fail measures for each revised step.
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered ...
Pipetting and Buretting Quantitative techniques
Question 1 – A student completed the same experiment and achieved the following results: Mean volume delivered: 24.93 mL Mean deviation: ± 0.13 mL The pipette they used was a 25.00 mL pipette, with a manufacturer’s mean deviation claim
of ± 0.06 mL. a) Is mean deviation a measure of accuracy or precision? i.e. does the mean deviation
reflect how far the result is from the true value (accuracy) or how far the values are
from each other (precision)? b) Comment on this student’s results with respect to accuracy and precision. Question 2 – Titration a) Will the concentration of the sulphuric acid, H2SO4, in the conical flask (receiving
vessel) be the same as that of the sample in the beaker that you collected from the
servery? Does this matter? Why/Why not? b) Calculate a mean (average) value for the titre values you have chosen. Justify any
exclusions you have made. c) The equation for the acid-base neutralisation reaction you perform in each titration is
given below. Balance this equation.
H2SO4(aq) + NaOH(aq) ⇋ Na2SO4(aq) + H2O(l) e) The ratio of the number of moles of H2SO4 to NaOH required for reaction (nacid:nbase)
is given by the balanced equation. Using your balanced equation and the value of
number of moles of NaOH you have just calculated (number of moles = 6.85), what is the number of moles of
H2SO4 in the conical flask?
f) Rearrange the equation n = cxV to calculate the concentration of your H2SO4 solution.
g) Obtain the true value from the servery and compare this to your own experimentally
determined concentration.
2 pages
Gram Positive
• This completed sheet turned in using the Canvas submission link “Gram Positive Case List the media that was used for ...
Gram Positive
• This completed sheet turned in using the Canvas submission link “Gram Positive Case List the media that was used for the following tests for the ...
Chemistry Cobalt Complexes & Le Chateliers Principle Lab Report
AssignmentComplete the ChemCollective lab.View the orientation video to learn how to use the ChemCollective website.After ...
Chemistry Cobalt Complexes & Le Chateliers Principle Lab Report
AssignmentComplete the ChemCollective lab.View the orientation video to learn how to use the ChemCollective website.After watching the video, go to the Cobalt Chloride and LeChatelier's Principle lab (Links to an external site.) http://chemcollective.org/vlab/85 on ChemCollective.Follow the instructions in the PDF that is provided below.Complete the Excel Spreadsheet download.Write a short discussion (instructions are in the PDF)This file is downloadable: cobalt_BYH.pdf downloadMinimize File PreviewFor help with ChemCollective and with the Excel sheet, you can view the video below. You need to conduct the experiment on the ChemCollective simulator, so I have blurred out some sections in the video.Discussion: Color changesUses experimental observations to explain whether color changes observed in steps 1-4 consistent with Le Chatelier’s Principle?10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeDiscussion: Endothermic or exothermicUses description of results to explain whether the reaction (as written in the Background) endothermic or exothermic.10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeDiscussion: KcUses quantitative experimental results to explain whether changing the concentration of reactant or product change the equilibrium constant for a reaction?10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeDiscussion: Effect of temperature on KcUses quantitative experimental results to explain whether hanging the temperature of a reaction change the equilibrium constant?Uses quantitative experimental results to explain temperature affects the equilibrium constant for an endothermic reaction? (or how does temperature affect the equilibrium constant for an exothermic reaction?)10 ptsFull Marks0 ptsNo Marks10 ptsThis criterion is linked to a Learning OutcomeAnalysis and FormatDiscussion is written in complete sentences and in paragraph form.Results were adequately recorded and calculated correctly.Solution Equilibria: Cobalt(II) complex ionsIn this section, you will examine an equilibrium reaction that occurs in solution. The reaction examined will use something called a complex ion. Many transition metal ions can form bonds with electron rich compounds or ions. These complexes often exhibit different colors, depending on what is bound. In this simulation, we will examine the reaction between hexaaquacobalt(II) ion in equilibrium with tetrachlorocobaltate(II) ion. The cobalt(II) ion bound to water is a pink color where as the cobalt(II) ion bound to chloride ions is blue.Co(H2O)2+6(aq)+4Cl−(aq)⇀↽CoCl2−4(aq)+6H2O(l)Co(H2O)62+(aq)+4Cl−(aq)↽⇀CoCl42−(aq)+6H2O(l)Image Credit: http://www.docbrown.info/page07/transition07Co.htmWatch the following video for see what the equilibrium looks like in a real lab setting.
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