Question

A calibration curve is measured and the equation is y = 35.3 x + 0.85. A...

A calibration curve is measured and the equation is y = 35.3 x + 0.85.

A solution with a concentration of 0.100 M is run by the method five times and the standard deviation of the result is found to be 0.032.

What is the analytical sensitivity at a concentration of 0.100 M?

a. 0.85

b. 42

c. 1100

d. 35.3

the answer is C, please explain why and why other answers are wrong!

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Analytical sensitivity, =slope/standard deviation=m/Ss =35.3/0.032 =1103.125 rounded to 1100.

Thus, option C. is correct.

Option A. 0.85 is the Y-intercept, i.e., it is the value of Y when X =0. It's not Analytical sensitivity.

Option B. 42 is incorrect because m/Ss 42

Option D. 35.3 is the slope(m) of the given calibration curve. It is called as calibration sensitivity. Thus, 35.3 is calibration sensitivity but not analytical sensitivity.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A calibration curve for CuSO4 at 635 nm yields a straight line described by the equation...
A calibration curve for CuSO4 at 635 nm yields a straight line described by the equation y = 2.182 x + 0.968. If the measured absorbance for a solution of unknown concentration of CuSO4 is 0.226, what is the concentration of the CuSO4 solution? Provide your response to three digits after the decimal. _____ M
A lab group obtained the following equation for their calibration curve for a series of dilutions:...
A lab group obtained the following equation for their calibration curve for a series of dilutions: y = 17.711x + 0.104. They measure the absorbance of a solution of unknown concentration and found that absorbance to be 0.349. What is the concentration of their unknown solution (in Molarity)?
Calibration data for a bromide ion-selective electrode (ISE) was collected and recorded below. The potential of...
Calibration data for a bromide ion-selective electrode (ISE) was collected and recorded below. The potential of the ISE was measured against a saturated calomel electrode (SCE). All solutions were buffered at a pH of 7.56. A linear calibration curve can be constructed from this data as a plot of potential (in mV) vs. pBr. Determine the slope and y-intercept of such a plot of the calibration data given. [Br-](M) Potential (mV) 0.300 -21.2 0.0300 36.7 0.00300 96.0 0.000300 154.7 0.0000300...
3. Consider the region R in the first quadrant enclosed by y = x, y =...
3. Consider the region R in the first quadrant enclosed by y = x, y = x/2, and y = 5. (a) Sketch this region, making sure to identify and label all points of intersection. (b) Find the area of R, using the method of your choice. (c) Using the method of your choice, set up an integral for the volume of the solid resulting from rotating R around the y-axis. Do NOT evaluate the integral. (d) Using the method...
1. A standard solution of 100 ppm (100 mg / L) of an organic compound was...
1. A standard solution of 100 ppm (100 mg / L) of an organic compound was analyzed and this has a maximum absorption band at 270 nm. A calibration curve was prepared from which the following data were obtained: Conc. (Ppm) 1 1,5 2 3 4 Absorbance 0.1282   0.1940 0.2615 0.3995 0.5422        If 2 ml of an unknown solution of this compound are diluted to 50 ml, an absorbance of 0.425 is obtained. a. Calculate the concentration...
utility function u(x,y) = x3 ·y2 I am going to walk you through the process of...
utility function u(x,y) = x3 ·y2 I am going to walk you through the process of deriving the optimal quantity of apples and bananas that will make you the happiest. To do this, we are going to apply what we learnt about derivatives. a) First, you have a budget. You cannot just buy an infinite amount since you would not be able to afford it. Suppose the price of a single apple is Px = 2 while the price of...
1.) You will work with 0.10 M acetic acid and 17 M acetic acid in this...
1.) You will work with 0.10 M acetic acid and 17 M acetic acid in this experiment. What is the relationship between concentration and ionization? Explain the reason for this relationship 2.) Explain hydrolysis, i.e, what types of molecules undergo hydrolysis (be specific) and show equations for reactions of acid, base, and salt hydrolysis not used as examples in the introduction to this experiment 3.) In Part C: Hydrolysis of Salts, you will calibrate the pH probe prior to testing...
1. Consider the general form of the utility for goods that are perfect complements. a) Why...
1. Consider the general form of the utility for goods that are perfect complements. a) Why won’t our equations for finding an interior solution to the consumer’s problem work for this kind of utility? Draw(but do not submit) a picture and explain why (4, 16) is the utility maximizing point if the utility is U(x, y) = min(2x, y/2), the income is $52, the price of x is $5 and the price of y is $2. From this picture and...
Total utility can be objectively measured in numbers that indicate usefulness or benefit to the consumer....
Total utility can be objectively measured in numbers that indicate usefulness or benefit to the consumer. ____ 2. Consumers should purchase quantities of a good to the point where MU > P. ____ 3. Voluntary exchange requires that there must be mutual gain. ____ 4. Points along a budget line represent the maximum combinations of two commodities that a consumer can afford. ____ 5. The budget line represents a consumer's preferences for a commodity. ____ 6. A change in consumer...
Acid-Base Behavior In addition to following the general safety rules, chemicals need to be handled properly....
Acid-Base Behavior In addition to following the general safety rules, chemicals need to be handled properly. In particular, two very important classes of compounds called acids and bases require special attention. These compounds are commonly used reagents in the laboratory; therefore, understanding their proper disposal is beneficial. Physical differences between acids and bases can be detected by the some of the five senses, including taste and touch. Acids have a sour or tart taste and can produce a stinging sensation...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT