231L+Dyes+TEMPLATE 2023-04-18 20_33_05

Not exactly sure how to fill out the table?

This is going with the first assignment I submitted. Fingerprinting

Instruction: 1. Using a 25-mL glass stoppered buret filled with distilled water and with an initial reading (IR) of 0.00 mL, if about 1/3 of the content is run down record the final reading (FR) for Trial 1. For trial 2  run down another 1/3 of the content. Record the IR and FR of the second trial.   2.  Using a 25-mL rubber stopperd buret  filled with distilled water and  with an  initial reading (IR) of 0.00 mL, if about 1/4of the content  is run down record the final reading (FR) for Trial 1. For trial 2  run down another 1/4 of the content. Record the IR and FR of the second trial.   3. Complete the table.   1. Buret with Glass Stopper                TRIAL 1             TRIAL 2 Final reading     Initial reading     Volume Used               2. Buret with Rubber Stopper                TRIAL 1             TRIAL 2 Final reading     Initial reading     Volume Used

It's important to mark the solvent front with a pencil after the plate is finished being developed in order to calculate an Rf. Group of answer choices True False

Peak Retention Time (minutes) Area 1.201 136501204 acetone 2.011 1253056 toluene ortho-product para-product 3.201 8340750 3.350 14890645 a) What was the relative percent yield of the ortho-product? b) What was the relative percent yield of the para-product? c) What was the relative percent yield of the product?

0.200 M 0.00200 M Test Tube No. [FESCN2*1std (M) Absorbance Fe(NO3)3 (mL) KSCN (mL) 17.98 1.97 0.815 5 (Standard) Edit Edit Edit NG 1 Info

Chemy 101, Experiment 8 Data Sheet, Separation of a Mixture by Paper Chromatography Student name: I.D#: Sec No.: Results & Calculation: 1. Color of spots: Cu*. N*. Fe*. 2. Ion requiring no development is 3. Ammonia develops a color. 4. The ion that causes the color of (3) is 5. Dimethylglyoxime develops a .color. 6. The ion that causes the color of (5) is 7. Ring front distances for knowns are : solvent : .mm; 3+ 8. Cu* inin; Ni* min : Fe* imin. distance traveled by spot R, distance traveled by liquid 9. 10. R values for knowns: Cu. Ni ; Fe+ Unknown label No 1. Ring front distances for unknowns: 2. R values for unknown : .mm; mm mm. mm ; mm mm 3. Ions present in unknown 4. Observation on relative amounts

Calculate the number of replicate analyses

Below is the question

DATA REPORT FORM Procedure A: Ink Analysis by Paper Chromatography 1. Attach the chromatography paper results here. Name 2. Calculate the Rf value for each ink/marker sample. If there are more than one spot in the sample, calculate and list Rf for all components. Procedure B: Identification of Unknown Analgesic Drugs 1. Sketch the best results of the TLC plate here, including unknown sample and known compounds. 11

please help with trial 1 so i can answer trial 2 and 3. thank you please show solution

Suzy Baker What three areas are affected by an "irritant"? (refer to ACS Safety in the Academic Chemistry Laboratories Vol. 1)    [use the answer format= ans 1, ans 2, ans 3]

5 and 6

Can NaOH be used in TEST II, instead of NH3 ? doesn't matter O no O yes O No answer text provided.

Experiment 2 - Extraction   Procedure The procedure[1] has been outlined below. Add details if needed so that you are able to complete the experiment in lab using only this document.      The following chemicals may be encountered during this experiment:   Acetylsalicylic acid Sucrose Acetanilide Ethyl acetate Sodium bicarbonate (NaHCO3) Hydrochloric acid (HCl) Sodium sulfate (anhydrous)     Dissolve phensuprin (0.5 g) in ethyl acetate (25 mL). Measure out 0.5-1.0 g of phensuprin and put it in a beaker (100 mL) along with 25 mL of ethyl acetate. Stir for 1-3 min, breaking up any chunks as needed Sucrose will not dissolve, but everything else will. Gravity filter the solution to collect the sucrose. Set up a glass funnel in a ring or clamp, so that it will drain into a clean Erlenmeyer flask (125 mL). Put a fluted filter paper into the funnel and "wet" it with ethyl acetate. Optional: Weigh the filter paper before using it. Swirl and pour the solution into the funnel, being…

Plant pigments in spinach were separated with TLC with cellulose as thestationary phase and 80/20 diethyl ether/acetone mixture as themobile phase. If needed, the solvent structures in the lab Appendix.1. Determine the Rf values of each plant component on this TLC plate.2. Arrange the plant components from most polar to most nonpolar.  Please answer both 1 and 2 (picture below is the same question attached )

Two major methods used to ionize the molecules in mass spectrometry are, (1) electrospray and (2) matrix-assisted laser desorption. Which method requires the sample to be injected in the liquid form to create a mist in the spectrometer? Group of answer choices Electrospray Matrix assisted laser desorption both 1 and 2 neither 1 and 2 Start Solving Skip question Exit

I need the answer as soon as possible

Task: You are a forensic analyst employed at the Baltimore County Forensic Lab. You plan to perform paper chromatography on the ink from the note and a sample from the marker. Permanent marker ink is non-polar. You need to select the best solvent to use as the mobile phase in order to compare the ink sample and determine if they may be a match. The solvents you have available to you are carbon tetrachloride and water.Which solvent would be best to analyze the ink samples using paper chromotography?Your explanation should include:•    the name of the liquid solvent that should be used for the paper chromatography analysis•    scientific reasoning for your choice of the liquid solvent that will be used•    the Lewis structures for carbon tetrachloride, CCl4, and water, H2O•    how the shape and symmetry of each molecule influences its polarity

help  please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working!

Materials and detailed methods:  paragraph or two explain how the experiment was done  Raw Data: Weight of paper weighed -1.834 1 gram of Anthracene= +1.007 0.5 grams of maleic Anhydride= +0.506 Heating bath at 140 C 10 ml of o-xylene added to 1 gram of Anthracene= +1.007 0.5 grams of maleic Anhydride= +0.506 Then place on heating bath at 140 C After heating reagents dissolve  Then color changed from yellow to white clear Then mix is cooled in ice bath after a solid product is in the liquid solution  You place that in vacuum filtration  Product is off white crystal  Crude product= +1.428 g

Please help with 1, 2 & 3

PLEASE Answer within 20-30 minutes. Thank you!

Why is it not necessary to test the supernatant from both trial samples for the excess reactant is procedural step number 9?

Calculate the volume of NaOH used in each trial. Use sig figs.

I need help on my practice final, if you could explain how to solve this that would be extremely helpful for my final thursday. Please dumb it down chemistry is not my strong suit. If you could offer strategies as well to make my life easier that would be beneficial

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