water‚ ethanol‚ benzene‚ and ethyl acetate. Also pure acetanilide is achieved. here are five major steps in the recrystallization process: dissolving the solute in the solvent‚ performing a gravity filtration‚ if necessary‚ obtaining crystals of the solute‚ collecting the solute crystals by vacuum filtration‚ and‚ finally‚ drying the resulting crystals giving us the pure sample of the compound. The best solvent used for each of the compounds listed and the percentage recovery of the crude acetanilide
Premium Solvent Temperature Solubility
then cooled in an ice/water bath for 10 minutes. The aspirin was collected by vacuum filtration. After it dried‚ it yielded 0.93 g (30.9 % of original Panacetin). Isolation of Unknown: 71 mL of boiling H2O were poured int an Erlenmeyer flask with 0.93 g of unknown to dissolve it. After reaching room temperature‚ the flask was placed into a bucket with ice and DI H2O. The unknown was collected by vacuum filtration‚ rinsed with ice water‚ and dried to constant mass at 0.72 g. 13C NMR (100.13 MHz
Premium Sodium bicarbonate Hydrochloric acid PH
Transport Mechanisms and Permeability: Activity 4: Simulating Filtration Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Filtration is a process that You correctly answered: c. is passive. 2. Filtration is dependent upon a You correctly answered: b. hydrostatic pressure gradient. 3. The filtrate You correctly answered: d. All of these answers are correct. 4. An important place that filtration takes place in the body is in You correctly answered: d. the
Premium Kidney Question Filters
more than 1 millimeter‚ but typically 10 to 200 micrometers. Depending on the granularity‚ this powder can have an abrasive feel. It is very light because of its high porosity. Diatomite consists of fossilized remains of diatoms. It is used as a filtration aid‚ mild abrasive in products including toothpaste‚ mechanical insecticide‚ absorbent for liquids‚ matting agent for coatings‚ reinforcing filler in plastics and rubber‚ anti-block in plastic films‚ porous support for chemical catalyst and so on
Premium Orders of magnitude Diatom Insecticide
scheme of chemicals used. Table 1. Reagents used in procedure. Reagents Used Amount Used Butyl cyanoacetate (project #131) 2.12 g Aldehyde‚ 3‚5-Dichlorobenzaldehyde 2.66 g Piperidine 2 pipette drops Isopropanol (2-propanol) ~1.0 mL (filtration) Highlights & Observations: The 3‚5-Dichlorobenzaldehyde (2.12g) and Butyl cyanoacetate (2.66g) reagents were mixed into a tared vial with cap. A couple drops of piperidine were then added to the vial. The vial was then heated on a
Premium 3rd millennium Stoichiometry Chemical reaction
validation includes following things User requirements specification (URS) Design qualification (DQ) Installation qualification (IQ) Operational qualification (OQ) Performance qualification (PQ) Validation of sterilizing filters Sterile filtration processes are employed to sterile-filter a product prior to filling it aseptically into its final containers. Bulk drug solutions are sterile- filtered prior to aseptic crystallization‚ thus eliminating the possibility of having organisms within
Premium Bacteria
persistent schizophrenic symptoms. J Psychiatr Res 2002;36:7 – 18. Peters MS‚ Timmerhaus KD. Plant design and economics for chemical engineers. 4th ed. New York: McGraw-Hill; 1991. Petrusevski B‚ Bolier G‚ Van Bremen AN‚ Alaerts GJ. Tangential flow filtration: a method to concentrate freshwater algae. Water Res 1995;29:1419 – 24. Pulz O. Photobioreactors: production systems for phototrophic microorganisms. Appl Microbiol Biotechnol 2001;57:287 – 93. Pulz O‚ Scheinbenbogen K. Photobioreactors: design
Premium Algae Fatty acid Cost accounting
Name: Affiliated Institution: Course: Date: Water Filtration The methods used in this experiment are simple filtration methods which are used by many water companies worldwide. In this experiment simple lab equipment was used‚ after contaminating water with various contaminants the water was filtered by using cheesecloth‚ sand‚ activated charcoal and alum. The contaminants used in the experiment are the most common and the most hazardous. They include; cleaning detergents
Premium Water Drinking water Water quality
ring stand filter paper stirring rod charcoal sand foul water sample rubber tubing pinch clamp iron ring plastic cup scoop Objective/Purpose: To purify a sample of foul water using oil-water separation‚ sand filtration‚ and charcoal adsorption and filtration. Procedure: First‚ you have the measure the foul water sample and record it in your data table. You have to record what you see and smell before you filter anything out. Then you have the separate the oil from the water using
Premium Filters Water Aquarium
Gel filtration GEL FILTRATION OF PROTIENS Aim: The aim of this experiment is to identify proteins from a complex mixture using the gel filtration technique also known as size exclusion chromatography. This technique is widely used by biochemists when proteins larger than the pores are excluded from the column and the smaller molecules elute last and then collected in test tubes for examination by spectroscopic techniques. The red/brown proteins‚ in particular‚ will be observed closely
Premium Molecular biology Protein Chromatography