Question

4. How do the following variables affect the ability of the TLC to separate liquids? a)...

4. How do the following variables affect the ability of the TLC to separate liquids?

a) length of the plate

b) makeup of eluent

c) use of filter paper

d) size of spot

e) polarity of the compound being analyzed

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Pre -Laboratory Assignment 1. Briefly describe or define each of the following terms as they pertain...
Pre -Laboratory Assignment 1. Briefly describe or define each of the following terms as they pertain to this experiment. a) Spotting a plate b) Developing a plate c) Visualizing d) Rf e) eluent f) stationary phase 2. List the following solvents in order of increasing polarity: dichloromethane, acetone, toluene and cyclohexane. 3. Your unknown sample moved a distance of 25 millimeter from its origin while the distance traveled by the eluent from the origin was 55 millimeters. What is the...
Explain how each of the following would affect plate height (increase, decrease, leave unchanged). Briefly justify...
Explain how each of the following would affect plate height (increase, decrease, leave unchanged). Briefly justify each of your answers by indicating which terms in the van Deemter equation (A, B, C) would be affected and how. A. smaller particle size of stationary phase B. larger film thickness on stationary phase C. a distribution of particles sizes in the stationary phase packing D. small diffusion coefficient of the analyte E. lower solvent viscosity (LC)
t-Lab questions Ka measuring pH* titration 4. How would the following affect the results? a) The...
t-Lab questions Ka measuring pH* titration 4. How would the following affect the results? a) The buret is dirty and drops of NaOH cling to the side walls of the buret as it is drained. b)The buret is not rinsed with NaOH prior to filling. c)The buret tip is not filled at the start of the titration. d)20 mL of unknown acid are used instead of 10 mL. e)The buret is not read at eye level. Explain. f)The base is...
4. Do you agree with the following statement: “A real depreciation of home currency always improves...
4. Do you agree with the following statement: “A real depreciation of home currency always improves the trade balance.” Why/why not? 5. How does a rise in real income affect aggregate demand? (a) Y ↑→ Yd ↑→IM ↑→CA ↓→AD ↓, but Y ↑→ Yd ↑ → C ↑→ AD ↑ by more (b) Y ↑→ Yd ↑→IM ↓→CA ↓→AD ↓, but Y ↑→ Yd ↑→ C ↑→ AD ↑ by more (c) Y ↑→ Yd ↑→IM ↑→CA ↑→AD ↑, and...
1- Which of the following is a drawback of using three- dimensional graphs? a- three-dimensional graphs...
1- Which of the following is a drawback of using three- dimensional graphs? a- three-dimensional graphs are difficult to represent on paper. b- three-dimensional graphs cannot represent qualitative data. c- three-dimensional graphs cannot be rotated when presenting digitally. d- three- dimensional graphs can only express two variables at a time. e- three-dimensional graphs contains lines that overlap too much to be distinguishable. 2- the most frequently used chart in comparing the subdivisions of wholes is the a- line chart b-...
Use R to do each of the following. Use R code instructions that are as general...
Use R to do each of the following. Use R code instructions that are as general as possible, and also as efficient as possible. Use the Quick-R website for help on finding commands. 1. Enter the following values into a data vector named Dat: 45.4 44.2 36.8 35.1 39.0 60.0 47.4 41.1 45.8 35.6 2. Calculate the difference between the 2nd and 7th entries of this vector using only reference indices. 3. Calculate the median of Dat. 4. Sort the...
1. Explain how the following event would affect the cost curves: Hourly wages for employees increase....
1. Explain how the following event would affect the cost curves: Hourly wages for employees increase. A) Marginal cost, average variable cost, and average total cost will decrease. Average fixed cost will not change. B) Marginal cost, average variable cost, and average fixed cost will increase. Average total cost will not change. C) Marginal cost, average variable cost, and average total cost will increase. Average fixed cost will decrease. D) Marginal cost, average variable cost, and average total cost will...
Which architectural pattern is most appropriate for the following multi-user, web-based system for providing a film...
Which architectural pattern is most appropriate for the following multi-user, web-based system for providing a film and photograph library?(1 Point) Please read textbook Chapter 6.3 Architectural Patterns MVC Pattern which separates presentation and interaction from the system data Layered architecture which organizes the system into layers, with related functionality associated with each layer Repository architecture - all data in a system is managed in a central repository that is accessible to all system components. Components do not interact directly, only...
2) Now read the following data into R. Use R for all statistical procedures. Sample Sample...
2) Now read the following data into R. Use R for all statistical procedures. Sample Sample A B 0.7969 1.4731 1.2669 3.2137 1.5856 2.2486 0.4959 1.1156 0.5022 10.6207 0.5524 1.9835 10.3060 31.2243 0.6244 3.7984 1.9789 1.4710 1.6788 9.0351 (a) Make q-q plots of both samples. (b) Perform a t-test (unequal variances). (c) Perform a MWU test. (d) Which test gave you the better p-value now? Why? (e) What is a “better” p-value? Why? 3) You measure the length of 5...
Write a program of wordSearch puzzle that use the following text file as an input. The...
Write a program of wordSearch puzzle that use the following text file as an input. The output should be like this: PIXEL found (left) at (0,9). ( Use JAVA Array ) .Please do not use arrylist and the likes! Hints • The puzzle can be represented as a right-sized two-dimensional array of characters (char). • A String can be converted into a right-sized array of characters via the String method toCharArray. . A word can occur in any of 8...