Q: Name the compound. Selected Answer: b. cis-4-hexene
A: Alkenes can exist as stereoisomers (as geometric isomers) if they have two distinct substituents at…
Q: S-adenosylmethionine reacts with norepinephrine to form epinephrine. HO HO norepinephrine HO HO : OH…
A: SAM -S-adenosylmethionine is alkylating agent.SAM gives positively charged sulphur and facilitates…
Q: Caffeine (MW 194.2 g/mol) is a stimulant found in coffee, tea, many soft drinks, and chocolate.…
A: The mass percentage of the elements is given as: ElementMass percentageC49.47H5.19N28.86O16.48Molar…
Q: The vad der Waals parameter "a" is much larger for H,O gas than for He gas. What does this say about…
A: Johannes Diderik van der Waals developed the Van der Waals equation in 1873. The equation is…
Q: Draw the structure of the expected organic product(s) formed in the following reactions including…
A: Given question related to reaction between benzene and HI
Q: How many different molecules are drawn below?
A: The compounds with the same molecular formula but different bond connectivity are structural…
Q: 3. You are loading a protein gel that holds up to 50ul. You need to load 25ug of protein sample that…
A: Proteins are large, complex biomolecules that consist of peptide-bonded long chains of amino acids.…
Q: BERIT Q2: Variations in average atomic mass may be observed for elements obtained from different…
A: Average atomic mass = fractional abundance of isotope 1 x atomic mass of isotope 1 + fractional…
Q: [Review Topics] [References] Write an acceptable IUPAC name for the compound below. Include 'cis'…
A: •Identification of parent chain•Identification of substituents•Numbering of parent chain (it is done…
Q: Show that the van der Waals equation for argon at T = 142.60 K and P= 35.23 atm can be written as…
A: The van der Waals equation is an equation of state for gases that takes into account the finite size…
Q: What would be the approximate yield for this reaction? A. -5% B. -15% C. -70% D. -98% E. -1,200% hv…
A:
Q: This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel…
A: Number of moles of Ni(CO)4 = 2.9 molesNumber of moles of carbon (C) = ?
Q: Which compounds are Lewis bases? Select all that apply. CH3CH₂CH3 NH3 H-C=C-H H™
A: Lewis bases are electron pair donor species. They are electron rich species (nucleophiles). It…
Q: 12. Circle all those compounds that are Lewis acids from among the group of compounds shown below. H…
A: To determine the Lewis acid from the given compounds:
Q: Study the following phase diagram of Substance X. pressure (atm) 1.2- 0.6. solid 200 liquid 400…
A: The phase diagram represents the different phases of the substance and the pressure and temperature…
Q: 26: A- What mass of NaOH is required to make 250 mL of a 2.5 M of NaOH? HINT: (The atomic mass of Na…
A: Molarity (M) is a concentration term for a solution. The molarity of a solution is defined as the…
Q: 50.0 mL of a 0.0010 M HC₂H302 (Ka = 1.8 x 105) solution is titrated with 50.0 mL 0.0010 M NaOH. What…
A: pH at equivalence point during titration should fall in between indicator pH range.
Q: Which of the following processes have a AS that is negative? Select all that apply H₂O (1)→ H₂O (s)…
A: The entropy of gas is always higher than solid or liquid because of the less intermolecular forces…
Q: The activation energy Ea for a particular reaction is 42.2 kJ/mol. How much faster is the reaction…
A:
Q: H₂C Identify the compound below that is best classified as a Bronsted-Lowry acid: H3C-MgBr || O KⓇ…
A: According to Bronsted -Lowry acid base concept, an acid is a substance which can release H+ ion and…
Q: Liquid X is known to have a higher surface tension and higher vapor pressure than Liquid Y. Use…
A: Given:Liquid X has a higher surface tension than Liquid YThe vapor pressure of Liquid X is higher…
Q: Identify the Bronsted base in the following reaction of I and II shown below.
A: According to Bronsted-Lowry Acid-Base theory , an acid is proton donor and a base is proton acceptor…
Q: 3. Design concise syntheses for the following transformations. Show all reactants, reagents, and…
A: To perform the given type of reactions are usedFriedel-Crafts Alkylation reaction,Permanganet…
Q: Draw the condensed structure of an isomer of this molecule: CH3 CH3 CH-CH₂-CH3 Click anywhere to…
A:
Q: Be sure to answer all parts. Acetonitrile (CH3CN) has a pKå of 25, making it more acidic than many…
A: Given:Acetonitrile According to Bronsted-Lowry acid-base theory, the conjugate acid-base pairs…
Q: A mixture of 0.448 M Cl₂, 0.462 M F₂, and 0.833 M CIF is enclosed in a vessel and heated to 2500 K.…
A: For a reversible chemical reaction, after some point in time the reaction comes to stop as the rate…
Q: 9. Rank the following atoms and ions in in terms of increasing radius. Briefly explain your…
A: Down the group atomic radii inrease . Along a period atomic radii decrease. Addition of electron…
Q: 5. Use molecular orbital theory to rationalize if a C=O or C=N is more electrophilic. To completely…
A: ELECTROPHILE: it means a molecule that is ELECTRON-LOVING. Any molecule that is electron deficient…
Q: Draw the structures of two stereoisomeric alkenes that would give 3-hexanol or hexan-3-ol as the…
A: Alkene undergoes hydroboration followed by oxidation reaction to form alcohol as major product.Given…
Q: 7. Provide missing information on the alkenes shown below: Degrees of unsaturation Boling point…
A: Given:AlkenesRank the boiling point from 1-3.The IUPAC (International Union of Pure and Applied…
Q: I H. H´ | H An incorrect Lewis structure for the neutral dimethyl sulfoxide is shown below. Identify…
A: Octet mean the atom must have 8 total valence electrons in their outer shell . Greater than 8 is…
Q: After dissolving the aspirin in hot ethanol, why does it crystallize when water is added to the…
A: We have to explain the cause of recrystallization of aspirin in presence of water.
Q: 3. Show the product(s) of the following substitution reactions, and show a mechanism. Is the…
A: order of stability of carbocations in SN1 NUCLEOPHILI C SUBSTITUTION REACTIONS:…
Q: Pls help ASAP
A: A chemical reaction is one that involves a chemical change i.e. formation of new compounds. It is…
Q: 5. Calculate the molar concentration of Mg when the pH of the solution is adjusted to 11.50. The Kp…
A: Given,pH of the solution = 11.50Ksp of Mg(OH)2 = 8.9 x 10-12
Q: 3. How many different phosphorous chemical environments in the following compounds? a. Zuz b.The…
A: Chemical environment means different groups attached to the specified atom.
Q: Pls help ASAP
A: • Covalent bond: Bond formed by sharing of electrons between the two atoms in a molecule and bonding…
Q: For each of the following sets of volume/temperature data, calculate the missing quantity after the…
A: Given,The set of volume/temperature data:a. V = 2.03 L at 24 °C; V = 3.01 L at ? °Cb. V = 127 mL at…
Q: 2. Determine how many different fluorine environments are present in each molecule or ion assuming a…
A: Nuclear transition refers to the process in which an atomic nucleus changes from one energy state to…
Q: If a 8.22 M stock solution of ammonium chloride was diluted 2.00 mL into a 100 mL flask, what is the…
A:
Q: A cylinder is filled with 10.0 L of gas and a piston is put into it. The initial pressure of the gas…
A: According to Boyle's law at constant temperature, volume of gas is inversely proportional to it's…
Q: Match each kinetic order of crystal violet listed below with the function of absorbance (A) that,…
A: Zero order reaction:A = -kt + AoFirst order reaction:ln A = -kt + lnAoSecond order reaction:1/A = kt…
Q: 3. Estimate the volume of the object to the correct number of significant figures:
A: A graduated cylinder is an apparatus used in a chemical laboratory to measure the desired volume of…
Q: Q2: Variations in average atomic mass may be observed for elements obtained from different sources.…
A:
Q: Which of the following molecules can have torsional strain? Mark all that apply. cyclopentane…
A: Torsional strain is a sort of steric strain that develops in organic molecules, especially in those…
Q: If 150 mg of fluorine-18 is shipped at 7:00 AM, how many milligrams of the radioisotope are still…
A: t1/2 = 0.693/kk = (2.303/t)log (Ao/A)Where, k = rate constant, t1/2 = half life, Ao = initial…
Q: Solve Part C. If, in addition to the constraints on glucose concentration listed previously, we…
A: Given that:The concentration of ATP = 5 mMThe concentration of ADP = 5 mMWe are required to…
Q: if you can. If there is not enough element 1 2 3 description Element 1 is a hard dark-red solid. A…
A: Given that :We have to identify whether the elements are metal or non-metal from the given…
Q: NBS hv
A: The given reaction is a allylic bromination using NBS ans photochemical condition. The allylic…
Q: A solution was prepared by adding 5.84 g of formaldehyde (H2CO) to 100.0 g of water. The final…
A: Given,Mass of Formaldehyde (H2CO)= 5.84 gMass of water = 100 gThe Final Volume of solution = 104…
Please answer the following question about a lab experiment about synthesizing aspirin. The procedure for this experiment is included in the photos.
Compare the appearances of the crude and recrystallized Aspirin, what are the reason for these two to appear different?
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
- * * * * ANNUEL TTTTTTT (show calculations and answer in the box) 2. Transfer 80 ml of a 3.00 mol/L stock solution into a 500 ml volumetric flask. Dilute to the mark with solvent. 3. Transfer 25 ml of a 2.20 mol/L stock solution into a 100 ml volumetric flask. Dilute to the mark with solvent. Calculate the Aliquot Volume that must be transferred to the glassware for the dilution (show calculations and answer in box) 4. You want to prepare 500 ml of 1.25 mol/l solution. The stock solution concentration is 8.00 mol/L. 5. You want to prepare 1000 of 0.700 mol/l solution. The stock solution concentration is 14.0 mol/L. Aliquot volume Dilute with solvent to needed volume Diluted solutionPART 3- LABORATORY EQUIPMENT EQUIPMENT NAME FUNCTION To hold test tubes. Attaches to a retort stand to support glassware being heated. To pour liquid from a large container into a small container. To provide a flame during an experiment. ones To light the Bunsen burner. To attach test tubes to a retort stand. To clean substances out of a test tube. To hold a hot crucible or flask. To hold a hot test tube. To place on the lab bench to prevent burning or to use with ring clamp. To transfer small amounts of liquid. To grow bacteria or contain small experiments. To hold liquids. To measure liquids. To contain experiments (a stopper can be used to close the flask). To hold a hot beaker. To perform an experiment with a different substance in each well. To hold chemicals and perform experiments in. To scoop and transfer small amounts of substances, To stir during experiments that involve mixing or dissolving.Procedure: Step 1: Pipet 25 mL of prepared sample solution, which has been prepared into a 250 mL Erlenmeyer flask. Step 2: Add 3-5 drops of phenolphthalein indicator solution to the sample solution in the 250 mL Erlenmeyer flask. Step 3: Rinse the buret with three 10 mL portions of standardized 0.1 M HC1 acid solution, before fill this acid solution into the buret and record the initial volume of this acid solution in the burette. Step 4: Titrate the sample solution with the standardized 0.1 M HC1 to the endpoint and record the final volume of this acid in the burette. (Note: phenolphthalein endpoint is from pink color to colorless) Step 5: Repeat the titration for two more times. Step 6: Repeat the same procedure from step 1 to step 5 by using methyl orange as an indicator rather than phenolphathelein. (Note: methyl orange endpoint is from orange to red color). Calculate the alkalinity of the sample for both the indicators and potentiometric method using the following equation: [Alk]…
- Suppose that you heated the hydrated copper (II) sulphate in a test tube, instead of a beaker. How might this affect your results? 4 MAY 19 ... MacBook Pro & * %23 $ 2 3 4 5 6 7 E Y U G H J K C V M MOSISO command option command レーMultiple Choice Each of the numbered items or incomplete statements is followed by answers or by completions of the statement. Select the one lettered answer or completion that is best in each case. Write your answer before each number. 60. What is/are the purpose/s of heating sodium carbonate in 270°C for one hour before using it in the standardization of hydrochloric acid? 1. To remove carbon dioxide that is generated during the neutralization reaction II. To remove moisture III. To convert sodium barbonate to sodium bicarbonate a. I, II and III C. I only b. II only d. II and III 61. The process by which the exact concentration of a solution is determined: a. Dissolution C. Standardization Titration b. Neutralization d. 62. The function of Quality Control include the following, except: a. C. Analytical control Planning b. Auditing d. Inspection controlCurrent Attempt in Progress From the curves shown in Animated Figure and using the following Equation, determine the rate of recrystallization for pure copper at the several temperatures. Make a plot of In(rate) versus the reciprocal of temperature (in K-1). (a) Determine the activation energy for this recrystallization process. (See Section FACTORS THAT INFLUENCE DIFFUSION.) (b) By extrapolation, estimate the length of time required for 50% recrystallization at room temperature, 20°C (293 K). (a) i kJ/mol (b) i days
- A. FERMENTATION OF CANE SUGAR1. In a 500 mL Florence flask, place 50 gms of brown cane sugar and 1 gram ofdisodium phosphate.2. Dissolve 1 teaspoon of yeast in 15 mL of water. Add this to the sugar in the flasktogether with 150 mL water. Stir until the sugar is dissolved.3. Close the flask with a rubber stopper provided with a delivery tube so that theevolved gas will bubble through a solution of clear limewater.4. HAVE THE SET – UP CHECKED BY YOUR INSTRUCTOR.5. Keep the set – up inside the locker for 5 – 6 days at room temperature.Fermentation Set – up: ________________________________Write the equation for the hydrolysis of cane sugar _____________________________Write the equation for the fermentation of the simple sugars to alcohol __________6. At the end of the fermentation period, what is formed in the flask containinglimewater? _________________________________________________________________Write the equation for its formation ____________________________________________ C.…You obtain an Unknown Sample from the Stockroom. You begin testing the solution through the steps outlined in the flowchart of the experiment’s PDF file. You first add HCl and centrifuge your mixture. You observe the formation of a white precipitate in the bottom of the test tube. After pouring off the supernatant liquid, you add hot water to the white precipitate. Addition of the hot water dissolves some of the precipitate, but some white precipitate still remains on the bottom of the test tube. You pour off the supernatant liquid, and add ammonia (NH3) to the remaining precipitate. You now observe the formation of a gray-black precipitate. Which of the following is a valid conclusion to draw at this point? Select one: Hg22+ is definitely present. Pb2+ is definitely present. Ag+ could be present, or Hg22+ could be present, or BOTH could be present. Ag+ is definitely presentWhat is the E-factor for a synthesis that uses a 8.00 kg reaction mixture to generate 6.00 kg of desired product and 2.00 kg of waste?
- For each of the following scenarios, determine if the error will cause the molarity of the hydrochloric acid to be greater than, less than, or the same as the initial value. A: A student adds 50 mL of water to the reaction flask with unknown hydrochloric acid instead of the 25 mL sated in the procedure. B: A student adds 50 mL of water to the reaction flask with unknown hydrochloric acid instead of the 25 mL stated in the procedure. C: A student doesn't notice the some of the HCL has dripped out from the volumetric pipet when transferring to the reaction flaskYou obtain an Unknown Sample from the Stockroom. You begin testing the solution through the steps outlined in the flowchart of the experiment’s PDF file. You first add HCl and centrifuge your mixture. You observe the formation of a white precipitate in the bottom of the test tube. After pouring off the supernatant liquid, you add hot water to the white precipitate. Upon addition of the hot water, you have some white precipitate still at the bottom of the test tube, and the supernatant liquid is poured off. To this liquid, potassium chromate (K2CrO4) is added. Upon this addition of potassium chromate, you observe no formation of precipitate. Which of the following is a valid conclusion to draw at this point? (Choose one.) Select one: 1. Hg22+ is definitely present. 2. Pb2+ is NOT present. 3. Ag+ is definitely present. 4. Pb2+ is definitely present.Routine Chemical Tests for Urine - Word Table Tools Decy Joy Garriel Table Design O Tell me what you want to do 2 Share File Home Insert Draw Design Layout References Mailings Review View Help Layout X Cut P Find Calibri (Body) 12 A A Aa v AaBbCcD AaBbCcDc AaBbCcDc AaBbC AaBbCcC AaBbC AaBbCcD EE Copy ab. Replace Paste BIU v abe X, x A v aly - A - I Normal No Spacing I No Spac. Heading 1 Heading 2 Heading 3 Heading 4 A Select Format Painter Clipboard Font Paragraph Styles Editing COLLEGE OF HEALTH SCIENCES RESULTS AND OBSERVA TIONS: PARTI: BENEDICTS TEST FOR REDUCING SUGARS 田 TUBE PATIENT COLOR RESULT and NO. Before: Blue-green OBSERVATION WHITE PRECIPITATE: 1 Normal Patient 1 After: Greenish brown 2 Normal Patient 2 Before: Blue LIGHT GREEN After: Green PRECIPITA TE: 3 WHILTE AND YELLOW Pathologic Patient 1 Before: Blue PRECIPITATE: After: Green BRICK RED Before: Blue-green After: Brick Red Pathologic Patient 2 PRECIPITATE: Generalization: Page 5 of 8 947 words English (Philippines) K…