A student is recrystallizing 2.034 g of acetylsalicylic acid (aspirin) that was isolated from 8.00 grams of Excedrin. The recrystallization requires a seed crystal to begin. The seed crystal weighs 0.389 g. The student's actual yield after recrystallization is 1.663 g. What is the percent recovery?
Q: Mass of NaOH = SC Submit Part E Ascorbic acid, or vitamin C (C6H₂O6, molar mass= 176 g/mol), is a…
A: Given, E) The moles of ascorbic acid ( C6H8O6 ) = 2.81 × 10-4 mol. The mass of ascorbic acid is:…
Q: A 25mL sample of 2.0mol/L sodium oxalate is reacted with 30mL of 1.50 mol/L copper (II) nitrate…
A: Given that 25 mL sample of 2.0 mol/L sodium oxalate is reacted with 30 mL of 1.50 mol/L copper (II)…
Q: measurement of volume capacity of volumetric flask: please help me fill in the blanks Temperature of…
A:
Q: The theoretical yield of 1-bromobutane produced from 15.0 ml of butan-1-ol (density = 0.810 g/ml) is…
A: From given Volume = 15mL Density = 0.810 g/mL Now as said initially calculating mass from density…
Q: The guest list included 175 people who were invited, but 106 people showed up. Wh is the percent…
A: The percentage yield here will be defined by the. Formula = (number of people showed up/ no of…
Q: Calculate the theoretical yield of ethyl acetate in grams based on this answer: assuming 30 mL…
A: By writing balanced chemical reaction we can find theoretical yield of ethyl acetate.
Q: and
A: Given chemical reaction between morphine and acetic anhydride to produce heroin is as follow-…
Q: About 200 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…
A: Given 200 g of glucose give ethanol Actual yield = 84.5mL We have to find actual yield
Q: 0.498-g sample of sodium carbonate required 22.6 mLmL mL of a sulfuric acid solution to reach…
A:
Q: Organic solvent has a density of 1.12g/mL and is insoluble in water. If organic solvent is mixed…
A: To solve this problem we have to use the density of the given organic solvent .
Q: Assignment: This is an individual activity. After studying the lesson and watching all the videos,…
A: 1. a) Direct weighing means an objects is placed directly on balance and we take reading.…
Q: Aspirin yield You record the following data during the Qualitative and Quantitative Characterization…
A:
Q: An individual combined 1.397 g 4-aminophenol with 2.9 mL acetic anhydride. A mass of 1.302 g pure…
A:
Q: After performing precipitation gravimetry, Asta placed the weighing form inside the crucible, heated…
A: The average of these masses is : 23.1136 + 23.2125 + 23.4120 + 23.11394 = 23.2130
Q: A student mixes 50.0 mL of 0.15 M Na2CO3 and 50.0 mL of 0.15 M CaCl2 and collects 0.71 g of dried…
A:
Q: A group of students was tasked with synthesizing dibenzalacetone (DBA) in the lab. They used acetone…
A: A question based on general chemistry that is to be accomplished.
Q: In 2017, the atmospheric mixing ratio of CO2 is approximately 410 ppmv. In order to bring the…
A: Parts per million by volume is denoted as ppmv. It is given that 1 ppmv of CO2 = 2184.82 Tg…
Q: Acetylsalicylic acid commonly known as Aspirin is used to treat fever, inflammation, and acts as a…
A:
Q: Molly Cule weighed 8.61g of her hydrate (which is CaSO4*2H2O). After she did her hydrates lab, she…
A: a) Since the difference between the weight of hydrate and anhydrate should be equal to the weight of…
Q: What is the corrected actual yield(% Relative Area for 1-methylcyclohexane is 82.81%)? The…
A: The theoretical yield of 1-methylcyclohexane in moles is = 0.01961 The percent yield of…
Q: 4. In the background reading, it was pointed out that heroin can be produced from morphine in a…
A: The Density of Acetic anhydride is 1.08 g/cm3, then the mass of Acetic anhydride is - Mass of Acetic…
Q: About 300 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…
A: we first need to calculate the theoretical yield of ethyl alcohol. and we know- Density=Mass…
Q: How to calculate grams of aluminum chloride using 2AI + 6HCI -> 2AICI3 + 3 H2 formed with 135 g of…
A:
Q: During dilution process, what do you do if you add a bit too much solvent when filling the…
A: Volumetric flask is a lab equipment used to prepare solutions. It has a horizontal mark on its neck…
Q: Find the mass and mmol of tert-butyl chloride given the following data. Starting material…
A:
Q: Ash was estimated in the sample of hay, and the records were as follows, note that the moisture is…
A: Given that - Weight of crucible = 14 g Weight of crucible + sample = 15.2 g Weight of crucible +…
Q: In 1993 the Minnesota Department of Health set a health risk limit for 1,2-dlbromoethane In…
A: Given information, Health risk limit of 1,2-dibromoethane is 4.00 ng/L. Volume of water sample…
Q: About 200 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…
A:
Q: 125g of a certain seasoning and are told that it contains 96.0 g of salt. what is the percentage of…
A:
Q: Scientists at the University of Idaho Parma Research and Extension Center in Parma, Idaho have…
A: Given: Amount of starch has produce = 2.50×103 kg percent of starch in potato = 1.83 % let 1.83 kg…
Q: A student carried out the synthesis of aspirin as described using 3.00 g of salicylic acid and 6.0…
A: The balanced equation of the reaction is given and the mole of salicylic acid and acetic anhydride…
Q: The molar mass of an unknown organic liquid (M - 100) is determined by placing 5 mL of the liquid in…
A: The error in the calculation of molar mass is due toa) balance: There can be a random error if the…
Q: If 74.3 g of butane is burned in 132 kg of oxygen; Which is the limiting reagent? What is the mass…
A: Given, Mass of butane = 74.3 g Mass of O2 = 132 kg Which is the limiting reagent? What is the…
Q: About 200 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2…
A: First we have to calculate the theoretical yield by using the balanced reaction. After getting the…
Q: in a reaction, 4.0g of sodium oxide was formed from 13.8g of sodium. Calculate the percentage yield
A: given. Experimental yield of Na2O = 4 gram given amount of sodium = 13.8 gram
Q: A 5.0 g coal sample is given for analysis. After subjecting it to hot air oven at 107 oC for 1 hour,…
A:
Q: 42.Primary Standard reagent used in standardization of 0.1N sodium hydroxide a. Sulfamic acid c.…
A: A primary standard is a solution that itself do not need any calibration and is used for calibration…
Q: Q: A chemist attempts to prepare some crystals of borax (sodium tetraborate, Na,B4O7.10H2O) by…
A:
Q: Based from the Molarity (0.60) of the palmitic acid solution that you were able to solve from the…
A:
Q: A student crystallizes 1.8 g of benzoic acid and isolate 0.5 g as the first crop. What is the…
A: Given, A student crystallizes 1.8 g of benzoic acid and isolate 0.5 g as the first crop. The…
Q: Refer to the melting point data in table E5.4 below to answer question. In a recrystallization of a…
A: Melting point is the temperature at which substance change its state from solid to liquid. At the…
Q: Analyze each statement (A and B) whether they are true or false. Use the choices below in answering…
A: The given statements are, A) A dispersing agent such as Na-hexametaphosphate is needed prior to soil…
Q: When Alka-Seltzer® tablets are dissolved in water, a gas is produced due to the reaction between…
A: The given reaction on dissolving the tablet is, 3 NaHCO3 (aq) + C6H8O7 (aq) -----> 3 CO2 (g)…
Q: long
A:
Q: In synthesizing aspirin, a student used 5.324 g of salicylic acid and excess acetic anhydride.…
A: When salicylic acid reacts with acetic anhydride in presence of an acid it forms acetyl salicylic…
Q: A solution containing 15 mmole of CaSO, is diluted to 250 mL. The number of milligrams of CasO4 2H;0…
A:
Q: Determine the concentration of the titrant in M. Calculate the dissolved oxygen (DO) content of the…
A: Concentration of KIO3 Weight of potassium iodate = 0.10 g Percentage purity of pot. iodate = 99.97 %…
Q: The ______________ is the physical method of separation illustrated in this process: About three…
A: Answer The mixture form two separte layer. One is Aqueous layer and…
Q: If fifty glycerin suppositories are made from the following formula, how many milliliters of…
A:
A student is recrystallizing 2.034 g of acetylsalicylic acid (aspirin) that was isolated from 8.00 grams of Excedrin. The recrystallization requires a seed crystal to begin. The seed crystal weighs 0.389 g. The student's actual yield after recrystallization is 1.663 g. What is the percent recovery?
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
- ou separated acetanlide from sand and sodium chloride (NaCl) via recrystallization. You separated the recrystallized acetanilide from the dissolved NaCl using a seperatory funnel. You started the separation experiment with 4 g of an impure mixture of NaCl, sand, and acetanilide (MW= 135.17 g/mol) and you collected 3.2 g after the recrystallization experiment.Whats the percent yield?Chemistry A group of students was tasked with synthesizing dibenzalacetone (DBA) in the lab. They used acetone as limiting reagent, calculated their TY to be 8.0 g DBA, obtained 14.0 g crude product (wet) and their % Yield was 65%. What was the actual yield for their final product (recrystallized, dry DBA)? What was the minimum volume (ml) of ethanol they needed to recrystallize their wet crude? What was the amount of impurities (side products, moisture,...) contained in their wet crude?About 200 grams of glucose was fermented with 20 grams of yeast inside a fermenting vessel for 2 weeks. Calculate the percent yield of ethyl alcohol in mL or %(v/v) if the actual yield of the fermentation set-up is at 84.50 mL alcohol. Assume the density of ethanol is at 0.789 g/mL. C6H12O6 + H2O --> 2C2H5OH + 2CO2 Molar Masses: Glucose: 180.156 g/mole; Ethanol: 46.07 g/mole Water: 18.00 g/mole Report your answers in two decimal places. Please include the unit. For example: 55.33%
- You begin the reaction with 6.5 mL of t-butyl alcohol (density= 0.775 grams/mL) and 15 mL of concentrated HCl (1.189 grams/mL, 38% HCl) in a distillation flask. Calculate the limiting reagent and the theroretical yield of the product (t-butyl chloride) for this reaction. (Hint:Your starting amount of HCl is 38% of the starting smount).In 2017, the atmospheric mixing ratio of CO2 is approximately 410 ppmv. In order to bring the concentration down to pre-industrial levels (275 ppmv), how many teragrams (Tg) of carbon need to be sequestered? (1 ppmv of CO2 = 2184.82 Tg of C)A 150-g dried leaves sample of Ficus religiosa was subjected to ethanol extraction for 48 h. An empty round bottomflask was used in the rotavap weighing 168.77 g. After removing the ethanol solvent, the round bottom flask weighted172.49 g.What is the percent yield of the crude ethanol extract of F. religiosa leaves?
- John and Eli do a reaction with the goal to prove the law os conservation of mass. In the reaction, they place 50.00 g of acetic acid (CH3COOH) in a clean, dry ziploc bag and then add 5.00 g of baking soda (NaHCO3). The products of the reaction include sodium acetate, carbon dioxide, and water. In trial 1, Eli immediately seals the bag upon addition of the baking soda and waits until the bubbling comes to a halt. John weighs the closed bag with all contents and records mass in the table. For trial 2, John and Eli repeat the procedure but forgot to seal the bag. Their results are shown in the table below. 1. Calculate the theoretical mass of the open bag. 2. Are atoms/mass conserved in each of the reactions? 3. Provide mathematical evidence to explain your reasoning that atoms/mass are/are not conserved.An iodoform was prepared using ethyl alcohol. Five grams of iodine crystal was mixed with 5 ml of ethanol and 5 ml of NaOH. The resulting iodoform was dried and weighed = 1.55g. What is the percent yield of this process?Organic solvent has a density of 1.12g/mL and is insoluble in water. If organic solvent is mixed with water, water will be the top layer..
- When Alka-Seltzer® tablets are dissolved in water, a gas is produced due to the reaction between sodium bicarbonate (NaHCO3) and citric acid (C6H8O7) as indicated in the following reaction: 3 NaHCO3 (aq) + C6H8O7 (aq) 3 CO2 (g) + 3 H2O (l) + Na3C6H5O7 (aq) Following some experimental testing, two blends have been proposed for the tablet composition, namely: Blend 1: 6.00 gram of NaHCO3 mixed with 6.00 gram of C6H8O7 Blend 2: 6.00 gram of NaHCO3 mixed with 2.00 gram of C6H8O7 i) Determine the amount (in mole) of carbon dioxide gas produced from each of these blends, and so identify the blend that produces the most carbon dioxide. ii) What mass (in grams) of carbon dioxide gas would be produced using the blend that produces the most carbon dioxide?In biological systems, enzymes are used to accelerate the rates of certain biological reactions. Glucoamylase is an enzyme that aids in the conversion of starch to glucose (a sugar that cells use for energy). Experiments show that 1 μg mol of glucoamylase in a 4% starch solution results in a production rate of glucose of 0.6 μg mol/(mL)(min). Determine the production rate of glucose for this system in units of lb mol/(ft3)(day). A. 0.0015 lb mol/(ft3)(day) B. 0.0315 lb mol/(ft3)(day) C. 0.0539 lb mol/(ft3)(day) D. 0.3569 lb mol/(ft3)(day)Consider a blend of mass 5g formed from 2.2 g of C12H24 and 2.8g of C998H1000 paraffin's:, What are Mn and Mw of the blend?