ZuoTi.Pro
Question

A student measured the concentration of a metal in soil samples with FAAS. Reagent blanks give...

A student measured the concentration of a metal in soil samples with FAAS. Reagent blanks give signals of 1.90, 0.60, 1.60, 0.50, 1.70, 0.90, and 0.60 abs units. The slope of the calibration curve is m = 0.325 abs units/ppm.

Calculate the average of blank signals with appropriate significant figures.

Calculate the standard deviation of blank signals with appropriate significant figures.

Calculate the minimum detectable concentration (detection limit in ppm) with appropriate significant figures.

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1


0 0
Add a comment
Know the answer?
Add Answer to:
A student measured the concentration of a metal in soil samples with FAAS. Reagent blanks give...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give si...

    A student measured the concentration of a metal in soil samples with FAAS, Reagent blanks give signals of 1.10, 1.90, 1.20, 1.30, 1.60, 1.70, and 1.70 abs units. The slope of the calibration curve is m = 0.325 abs units/ppm. Calculate the average of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the standard deviation of blank signals with appropriate significant figures. Tries 0/25 Submit Answer Calculate the minimum detectable concentration (detection limit in ppm) with appropriate...

  • A student prepares a caffeine standard solution that has a concentration of 1858 ppm. To prepare...

    A student prepares a caffeine standard solution that has a concentration of 1858 ppm. To prepare a calibration curve, the student pipets various volumes of the standard solution into 50.0 mL volumetric flasks and dilutes to the fill line with water. The absorbance of each solution is measured in a 1.00 cm cuvette using the spectrophotometer and is shown in the table below. Calculate the concentration of each solution and create a calibration curve using the absorbance data provided. Based...

  • Question 1 Complete this prelab, and give this to your TA before prelab lecture starts. Please...

    Question 1 Complete this prelab, and give this to your TA before prelab lecture starts. Please remember that this prelab is weighted and worth 15% of your lab grade! Total Points 30 1. Consider the following reaction: Starting with 4.00 mL of 0.200 M Fe (anej in a cuvette, 0.10 mL increments of 0.00100 M SCN (wa) will be added. Assume that because [Fe oal(SCN (wl, the [Fe(SCN)'] concentration can be calculated from the limiting reagent, SCN. Calculate [Fe(SCN)2"]. Report...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT