At the end of your experiment, left over reagents should be disposed of in a(n) Regular garbage Chemical waste container Broken glass container Sink
Q: Place 5 mL of starch solution in a test tubes. Heat the test tubes to boiling and add 1 mL of…
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Q: Indicate the proper sequence of steps required to prepare a buret for use in this experiment. It may…
A: The steps of the preparation given are,
Q: Which would affect the accuracy of a melting point determination? Using a thermometer that has not…
A: Melting point is the temperature at which solid converts into liquid.
Q: Answer the following questions. What are the reasons for determining the ash content of a drug?…
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Q: 7. After completing Part 1 of the experiment, you take the melting point of your recovered benzoic…
A: Melting point represents the span of the temperature at which the crystals or the sample first start…
Q: what glassware and quipment is being used in this photo of lab equipment?
A: In the picture given in the question, the process of distillation is being carried out. If we have a…
Q: Which of the following compounds can be analyzed using a gas chromatography like the one used in…
A: Gas chromatography is an analytical technique which is used to separate and identify the chemical…
Q: What do you expect to observe when comparing the mp of the crude acetanilide to that of the…
A: Melting point : It is defined as the temperature at which solid substances converts into liquid.
Q: . Any organic solvent waste generated in this experiment should be collected in your fume hood and…
A: Organic solvents may be Carcinogenic, Toxic, corrosive, radioactive material, explosive. If we…
Q: Note the color of the cupric sulfate pentahydrate before and after heating. Question: Observations…
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Q: Hazards of this experiment include Melting point apparatuses that will be very hot Reagents that…
A: The Hazards of the experiment include the following things
Q: After removing the aqueous layer from the separatory funnel, how did you remove water from your…
A: By the separatory funnel, one can separate the organic layer and the aqueous layer. During this…
Q: What common result occurred in all of the following experimental tubes? Why? a. a mixture of hot…
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Q: Explain the correlation between the structure of the compounds (b-Carotene, chlorophyll ) and the…
A: Atomic Structure and PolarityThe designs of the significant parts are given beneath. Note that the…
Q: UV-lamp? Group of answer choices acetanilide sodium chloride caffeine acetylsalicylic acid
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Q: Lab Activity: Isolation of Lycopene from Tomato Paste What is the drying agent used? What is the…
A: The lycopene extract is washed with aqueous NaCl and K2CO3 to remove any impurity.
Q: What is the reaction involved in this experiment?
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Q: answer the following questions 1. What is the purpose of flame sterilizing the inoculating loop or…
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Q: Draw the synthesis setup for Ni(dppf)Cl2, make sure to include the round-bottom flask, reflux…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: Why must the stopper be removed from the separatory funnel before the lower layer is removed?…
A: It is important during solvent extraction, to remove stopper before the removal of lower layer of…
Q: why is it necessary to turn the separatory funnel upside down
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Q: Why did you wash your product with water (2x) before washing it with the sodium bicarbonate…
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Q: When you use a balance to weigh a reagent, you should weigh onto: -a filter paper. -the top of the…
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Q: All of the following chemical laboratory practices are wrong except A we should dispose of all of…
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Q: A. Test for Unsaturation To 3 drops of toluene add 3 to 4 drops of 1% potassium permanganate…
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Q: An oil sample had its iodine number determined using the pyridinium tribromide method. The sample…
A: To calculate iodine number(I.N), using formula: I.N=(BmL-SmL )1.269g/mLW(g) BmL is the blank volume…
Q: Any organic solvent waste (besides methanol and ethanol) generated in this experiment should be…
A: Organic solvent waste is the liquid waste generated after a reaction has been performed.
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A: Part 1: We know that " Organic solvents often have low boiling points, and during shaking a…
Q: A sample of fried potatoes weighing 200 g was extracted using a volatile organic solvent. The…
A: Amount of fried potatoes given = 200g Amount of cooking oil recovered = 15g Volatile organic solvent…
Q: Write the experimental procedure that provides all the details required to complete this experiment.…
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Q: What laboratory apparatus would you use if you want to set aside a sample for future analysis…
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Q: Which will not produce a green flame? * Bromoform Thioformaldehyde chloroform Carbon tetrachloride…
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Q: Explain two separation techniques how may be feasible for Benzene vs Phenol. One can be an…
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Q: 1. Place 5 mL of starch solution in each of 2 test tubes. 2. Heat the test tubes to boiling and add…
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Q: If Josuke Higashikata used a burette to measure the volume of a substance he needed to react with…
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Q: A solution (containing one of the following cations: Hg22+, Cd2+, Sn2+, NH4+) was tested with…
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Q: The samples you collected during distillation were kept in a fridge for a week before being analyzed…
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Q: An oil sample had its iodine number determined using the pyridinium tribromide method. The sample…
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Q: Please answer the question at the bottom, Thanks. LAB NOTES FOR PREPARATION OF BUTYL MAGNESIUM…
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Q: Calculate the Mgo content of milk of magnesia, 12.32 g of which was dissolved in 50.00 mL of 1.0340…
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Q: Write TRUE if the BOLD word/phrase makes the statement correct. Otherwise, write the correct…
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Q: Which of these can be rinsed down the sink? the left over liquid from a distillation of 1-butanol…
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Q: In the aspirin synthesis experiment, what is the reason for using as little ethanol as possible to…
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Q: 1. What can you conclude if your dry aspirin sample has a lower melting point than the literature…
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Q: A group claims that they acquired 6 grams of iodoform from 8 grams of iodine crystals reacted with…
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At the end of your experiment, left over reagents should be disposed of in a(n)
- Regular garbage
- Chemical waste container
- Broken glass container
- Sink
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Solved in 2 steps
- visual differences between the hydrated sample and the dried, anhydrous form?1. Discuss why synthetic lubricants is preferred over petroleum-based fluids for specific applications. 2. What is the purpose of solvent extraction process during the manufacturing of lube base stocks? Answer questions 1 and 2If uncertain as to how to dispose a chemical, dumping it to the sink followed by copious amount of water is a safe disposal procedure true or false
- researchers working in a chemistry lab were examined anatomical structures of the brain using concentrated formaldehyde solutions. Once their studies concluded there remained 1.5 gallons of the substance and the researcher decided to pour this down the drain. In this case, they directly violet regulations put in place by which office?1. Office of research integrity 2. Institutional animal care and use committee3. Occupational safety and health administration 4. Institutional review boardDifferent type of methods used in household contaminated wastewater purificationAnswer no. 3 only. Only state where the product (waste) should the waste should be disposed
- Draw a schematic diagram using this information. Preparation of the solution Take about 25-30 ml of distilled water in a beaker and add powdered crude copper sulphate while stirring the solution so that the powder dissolves. Keep adding the powdered sample till a little of it remains undissolved, even if it is stirred thoroughly. Now add 2-3 ml of dil. H2SO4 to make the solution clear. This prevents the hydrolysis of copper sulphate. Filtration of the solution Take a funnel and fix a filter paper in it and clamp it to a stand. Place a china dish under the funnel. The stem of the funnel should touch the wall of the china dish to avoid the solution splashing out. Pour the solution into the funnel over a glass rod and collect the filtrate in a china dish. The insoluble impurities are left in the filter paper as residue. Concentration of the filtrate to crystallisation point Heat the china dish on a sand bath till the solution is reduced to about one-third of its original volume. To…read the Procedure and answer the post lab questions below: Using a balance, mass between 1.50 – 2.00 grams of sodium carbonate in a pre-massed 150mL beaker. Add 20 mL of distilled water and stir thoroughly to make sure all the crystals are dissolved. Rinse the stirring rod with a little distilled water after stirring. Using a balance, mass between 1.50 – 2.00 grams of calcium chloride dihydrate in a pre-massed 50 mL beaker. Repeat Step 2 for the solution in the 50 mL beaker. Pour the calcium chloride solution into the 150mL beaker containing the sodium carbonate solution and stir. Mass a piece of filter paper. Fold the filter paper and place it into the funnel. Wet it with a little distilled water to ensure that it is stuck to the sides of the funnel. Slowly pour the mixture from the beaker into the funnel and collect the filtrate into a 125mL erlenmeyer flask. Do not allow the mixture to rise above the edge of the filter paper. Rinse the beaker with about 10 mL of distilled water.…read the Procedure and answer the post lab questions below: Using a balance, mass between 1.50 – 2.00 grams of sodium carbonate in a pre-massed 150mL beaker. Add 20 mL of distilled water and stir thoroughly to make sure all the crystals are dissolved. Rinse the stirring rod with a little distilled water after stirring. Using a balance, mass between 1.50 – 2.00 grams of calcium chloride dihydrate in a pre-massed 50 mL beaker. Repeat Step 2 for the solution in the 50 mL beaker. Pour the calcium chloride solution into the 150mL beaker containing the sodium carbonate solution and stir. Mass a piece of filter paper. Fold the filter paper and place it into the funnel. Wet it with a little distilled water to ensure that it is stuck to the sides of the funnel. Slowly pour the mixture from the beaker into the funnel and collect the filtrate into a 125mL erlenmeyer flask. Do not allow the mixture to rise above the edge of the filter paper. Rinse the beaker with about 10 mL of distilled water.…
- diffrentiate between oil in water emulsion and water in oil emulsion.Provide full complete solution do not round off numbers and show proper labelling and cancellations Answer question #3Answer the following questions. What are the reasons for determining the ash content of a drug? What is the purpose of heating the crucible to dull redness until a constant weight is obtained? What are the possible contents of the Total Ash and Acid-Insoluble Ash obtained from the sample drug used?
