Compare it to that obtained from the regression line

Assignment Help Mechanical Engineering

Reference no: EM131083775

A compound X is to be determined by UV-visible spectrophotometry. A calibration curve is constructed from standard solutions of X with the following. results: 0.50 ppm, A = 0.24; 1.5 ppm, A = 0.36; 2.5 ppm, A = 0.44; 3.5 ppm, A = 0.59; 4.5 ppm, A = 0.70. A solution of unknown X concentration had an absorbance of A = 0.50. Find the slope and intercept of the calibration curve, the standard error in Y, the concentration of the solution of unknown X concentration, and the standard deviation in the concentration of X. Construct a plot of the calibration curve and determine the unknown concentration by hand from the plot. Compare it to that obtained from the regression line.

Reference no: EM131083775

Questions Cloud

Write report about difference between happiness and pleasure : Write a report about difference between HAPPINESS and PLEASURE. The philosophy text book " FUNDAMENTAL OF PHILOSOPHY BY David Stewalt, H. Gene Blocker and James petrik. eight edition must be use to support your arguement.

Prove that x is either zero or is a zero divisor : Math 171: Abstract Algebra, Fall 2014- Assignment 8. Let R be a commutative ring. We say x ∈ R is nilpotent if there is a positive integer n ≥ 1 for which xn = 0. Let x be a nilpotent element of a ring R. Prove that x is either zero or is a zero divi..

Attendance rate and the distance of the centre : Draw a scatter diagram to show the association, if any, between the attendance rate and the distance of the centre from the hospital. Interpret the scatter diagram. Find Pearson's correlation coefficient

Good or service to be considered public good : For a good or service to be considered a ‘public good’, it must meet at least one criteria. Think of one good or service (other than education, healthcare, police/fire) that you believe is or should be classified as a public good and explain how it m..

Compare it to that obtained from the regression line : Compare it to that obtained from the regression line.

How has art been a reflection of society : eginning with the Gilded Age, how has art been a reflection of society? Describe and examine at least three examples you have encountered or examined in this course to support your conclusions.

Reason for the choice of the technique : Write a report on the article in which you identify the variables (dependent and independent) involved, the reason for the choice of the technique, identify the research question(s) authors have used, and the conclusions that the authors reach on ..

Write a historical report on ethnicity : Write a historical report on Ethnicity? Write a 500- to 750-word paper from one of the news reporter writing a newspaper article or blog entry about the group.

The phillips curve relates inflation and unemployment : Using the AD/AS model, discuss the changes to the economy that the Phillips curve explains well, and describe under what conditions the Phillips curve fails to explain economic behavior. Include graphs of the Phillips curve and the AD/AS model in you..

User Account

All Pages