Answer only question 4 and 5. Thank you 1. Using Excel, set up a spreadsheet with the following dataand prepare a graph which includes a linear regressionanalysis with the trendline displayed on the graph:Time(sec) Temp (°C)30.027.360.040.290.053.7120.067.4150.079.8180.091.3 Part B: QUESTIONS from Excel Graphing ExerciseUse the results of the linear regression analysis to answer the following questions.1. Express the mathematical function for the straight line with the correct number ofsignificant figures in the slope and y-intercept.y =2. What was the rate of heating for this sample of water (°C/sec)?Rate of Heating3. Show a calculation or explain how to determine the initial temperature of the water (atthe beginning of the experiment, before any data was collected) using the linearregression analysis. Include a correct unit label.Initial Temperature4. The water never reached the boiling point because, unfortunately, the student stoppedrecording data before the water began to boil. According to the trendline, how muchtime would have elapsed before the water boiled (100.0°C)? Show the calculation hereand insert a text box and arrow to identify this point on the graph.Time to boiling point5. What was the temperature of the water after 100.0 seconds of heating? Show thecalculation here and insert a text box and arrow to identify this point on the graph.Temperature after 100.0 s5526

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4. The water never reached the boiling point because, unfortunately, the student stopped recording data before the water began to boil. According to the trendline, how much time would have elapsed before the water boiled (100.0°C)? Show the calculation here and insert a text box and arrow to identify this point on the graph. Time to boiling point

4. The water never reached the boiling point because, unfortunately, the student stopped recording data before the water began to boil. According to the trendline, how much time would have elapsed before the water boiled (100.0°C)? Show the calculation here and insert a text box and arrow to identify this point on the graph. Time to boiling point

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter5: Errors In Chemical Analyses

Section: Chapter Questions

Problem 5.12QAP

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