two different students on two different days perform the paper chromatography experiement using the same materials ans samples. the students leave their chromatograms in the developing chamber for different amounts of time and the first students solvent doesnt rise as high above the baseline as the second students. yet they obtaon nearly the same rf values for each their spots. how might this be possible

two different students on two different days perform the paper chromatography experiement using the same materials ans samples. the students leave their chromatograms in the developing chamber for different amounts of time and the first students solvent doesnt rise as high above the baseline as the second students. yet they obtaon nearly the same rf values for each their spots. how might this be possible

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: 1E. C₂H12O₂

A: Given Molecular formula: C8H12O2 To Determine: 1) IHD 2)Label the significant peak 3) Determine the…

Q: 1. LDA CH₂ CHO CHO

A: When a ketone and an aldehyde are treated with lithium diisopropylamide (LDA), they can undergo an…

Q: concentration

A: According to the question, the concentration of ascorbic acid is ~0.001 M in lemon juice, We need to…

Q: An empty erlenmeyer flask weighs 241.3 g. when filled with water (density - 0.997 g/mol), the flash…

A: Given: Mass of empty Erlenmeyer flask = 241.3 g. Mass of Erlenmeyer flask with water = 489.1 g. And…

Q: Express your answers to at least 5 significant figures. The mass of one mole of boron is 10.811 g.…

A: Using mole concept easily determines number of atoms and molecules present in one mole of substance.

Q: What is the difference in mass between a nickel that weighs 4.8 g and a nickel that weighs 4.8673 g?

A: Given, Mass of nickel = 4.8…

Q: If sucrose costs $1.20 per pound, and a bottle contains 2.00 kg, how much would you pay for a case…

A: we know that, kg and pound are related ro each other as;2.205 pounds=1 kilogram1 pound=12.205*1…

Q: 4. How sizing down to Nano affect material properties?

A: Since substances at the nanoscale level have a greater surface-to-volume ratio, which causes them…

Q: If you have 10 pieces of bread, 20 slices of ham, and 4 slices of cheese, how many sandwiches can…

Q: Is 2 elements and 1 compound a combustion

A: Given: Two elements and one Compound is present for a combustion Reaction To find: whether the above…

Q: What is the volume, in cubic centimeters (cm^3) of 1.00 kilograms of gold?

Q: Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Hi, as you have posted 2 questions and have not mentioned which one you want us to solve for you.…

Q: what is 2.303

A: The rate law for first order kinetics is given by-kt= ln(Po/Pt)Where, k is the rate constant t is…

Q: What minimum amount of KO2 is required for the apparatus to produce enough oxygen to allow the user…

Q: Question 11: You are a gemstone expert studying samples of various materials. Gemstone Hambergite…

A: From the given gemstones, the most massive gemstone is = Smoky Quartz (density = 2.65 g/mL) The…

Q: Br- 'Br 1 equiv. NaN, DMSO

A: Given is an organic reaction. The reagent used is NaN3.It is a good reagent for SN2 reactions.

Q: individual bikes to work one day a week 50/52 work weeks (5 days) a year. they save 12.5

Q: a Assume that mitochondria are cylinders 8.00 um in length and 0.800 pm in diameter. What is the…

A: According to the bartleby guidelines for the multiple questions. I can solve only first question.

Q: Calculate the cost of one pound of nitrogen from a f

A: The objective of the question is to determine the cost of one pound of nitrogen from a fertilizer…

Q: 1. CH 3 μg Br 2. H+

A: The given reactant is an epoxide. When an epoxide reacts with a Grignard reagent, an alcohol would…

Q: Is this an Endothermic Sn1 diagram?

Q: Write the different methods of Equivalence Calculations?

A: There are various methods of finding equivalence point. Few of them are as follows: 1) Color change…

Q: A chardonnay wine is 13.5 percent by mass alcohol. If we consume 24 fluid oz of wine, and the…

A: Percent by mass alcohol = 13.5 % Volume of wine = 24 oz 1 oz = 29.57 mL 24 oz = 709.76 mL or 0.70976…

Q: To aid in the prevention of tooth decay, it is recommended that drinking water contain 0900 ppm…

A: Given 0.900 ppm = 0.900 g/106 cm3 water dimensions of cylindrical water reservoir diameter = 5.29 x…

Q: A piece of platnium metal ore obtained was determined to have a mass of 1.6124 grams. The density of…

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

Mixtures are created by physical means (mixing a substance with another; no chemical bonding); if so, can they be separated only by physical means?
What are advantages and limitations of different types of modelling? (modelling with experiments, computer simulations, modelling kits and quantitative modelling)
Q1. The net potential energy between two adjacent ions, EN, is represented by A В E N pn where EN is the net energy in Joule (J), A and B are constants with values of 1.436 J.nm and 7.32 × 106 J.nm, r is the interatomic distance between the two ions in nanometer (nm), and n is a positive number with a value of 8.
Which piece of equipment would you use to measure 7.10 mL of CuSO4 (aq)?
Scientists can learn a great deal about a community's drug use (both legal and illegal) by analyzing the contaminants in wastewater. In a recent study in New York State, chemists measured the concentration of cotinine, a derivative of nicotine that i produced in the liver and excreted in the urine of tobacco users. The chemists found the average cotinine concentrations in the wastewater stream was 1.43 µg/L. a Ι Ι H- b HH H H-C C-N: C=0: TH HH Jonutis/Shutterstock Revell, Introductory Chemistry, 2e, © 2021 W. H. Freeman and Company Cotinine is slightly soluble in water. Using the structure of cotinine, identify any polar covalent bonds that are present in this substance. C-O C-C C-H C-N
ча OH A OH D B с CHO
The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises 1.5 x 10-4% of the world population. If the percentage of left-handed people is approximately 12%, estimate the number of left-handers on the island of Nauru.
7. A cube of an unknown metal measures 1.69 mm on one side. The mass of the cube is 31.4 mg. Which of the following is most likely the unknown metal? SHOW your work [5 points] Metal Density (g/ cm- cm3) rhodium 12.4 8.96 copper niobium 8.57 vanadium 6.11 zirconium 6.51