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What else can I help you with?
What will happen to a chicken bone if you put it in pepsi?
Since Pepsi (like all Cola) is acidic, the carbonate in the bone will neutralise the acid, and the bone will become flexible and less rigid as part of the structure has been lost.
Does melasma go away?
Creams containing tretinoin, kojic acid, and azelaic acid have been shown to improve the appearance of melasma. Occasionally, your doctor may recommend chemical peels or topical steroid creams. In severe cases, laser treatments can be used to remove the dark pigment. Avoiding the sun and using sunscreen are key to preventing melasma. Often when birth control, menapausal supplemental hormones, or pregnancy resolve, it fades away naturally.
Who was the first scientist to make sulphuric acid?
It is unclear who actually was the first scientist to prepare sulfuric acid. Johann Van Helmont is often given credit, as the scientist who first prepared it, ca.1600.Related Information:There is documentation referring to it, dating from about 2600 years ago (appearing on a Sumerian list). So we know that there must have been preparation, and uses for it, prior to that. Documentation from about the beginning of the Common Era show that many physicians, scientists, alchemists, and philosophers observed, used, and worked with it. It is likely that some of these prepared it for themselves, but no documentation exists as proof of who or when.
What scientific explanation was given by caporeal as to the cause of the mysterious behavior in Salem?
In the 2 April 1976 issue of Science magazine, Dr. Linnda Caporael suggested that ergot poisoning from grain contaminated with the fungus might have led to some of the incidents of hallucinations and strange physical sensations reported during the Salem Witch Trials. Ergot contains a toxin which resembles the potent hallucinogen Lysergic Acid Diethylamide (LSD) and it can remain toxic in bread baked with flour that has been tainted by it. Note that her hypothesis is plausible but it has been both prominently disputed and defended by other scientists.
What are the main benefits of milk baths?
Milk baths have been used for centuries to help the skin keep in moisture and keep it looking healthy. The milk enzymes help to build the elastin in the skin, making the skin glow and have an overall healthy tone to it.
Uses of ortho iodo benzoic acid?
Ortho iodo benzoic acid is mainly used as a synthetic intermediate in the production of pharmaceuticals and agrochemicals. It can also be used in organic synthesis to introduce the iodo functional group into molecules. Additionally, it has been used in research as a reagent in various chemical reactions.
Why benzoic acid unmelt even 200 Celsius?
Benzoic Acid has a melting point of 122oC. If your sample did not melt even at 200oC, then you can only assume that the sample in Whole or Part was not Benzoic Acid. It must have been contaminated with some other compound with a much higher melting point.
A 50.0 ml sample of 0.43 m benzoic acid c6h5cooh is titrated with 0.50 m naoh calculate the pH at the equivalence point ka of c6h5cooh equals 6.5 10-5?
At the equivalence point, the moles of NaOH added will equal the moles of benzoic acid initially present in the sample. Since benzoic acid is a weak acid, it will partially dissociate in solution to produce benzoate ions and protons. At the equivalence point, all the benzoic acid has been converted to benzoate ions, resulting in a buffer solution of benzoate and its conjugate base. To calculate the pH at the equivalence point, you can use the Henderson-Hasselbalch equation, which considers the concentration of benzoate ions and benzoic acid to determine the pH of the solution.
Why does benzoic acid dissolve in acetone?
Formic acid is produced as a by-product in the manufacture of acetic acid. However, the industrial demand for formic acid is higher than can be made from this route, so dedicated production routes have been developed. One method combines methanol and carbon monoxide in the presence of a strong base, such as sodium methoxide, to produce methyl formate, according to the chemical equation:
Is benzoic acid polar?
Benzoic acid is not a polar molecule because the overall molecule lacks a dipole resulting a slightly positive side and a slightly negative side. In a way you can think of the molecule as neutral and therfore has slightly greater non-polar characteristics. Experiments in which I have been a part in proves this to be true. University of Toronto, St. George; Life Science First Year Student
What measures heat?
Heat is measured by a calorimeter. The calorimeter has been used to measure heat since 1782. Temperature on the other hand is measured by a thermometer.
What is the best method to use for TV calibration?
The best method to use for TV calibration appears to be professional calibration. Either a pro, who has been recommended by a specialty retailer, or an independent contractor certified through the Imaging Science Foundation.
How do you check if a tool has been calibrated?
The only way to check whether a tool has been calibrated is to review a calibration record, certificate or label to confirm that the most recent successful calibration was done recently enough. To check that a tool is IN calibration, use it to measure an item where the characteristic being measured is already known with high precision and confidence (called a standard). If the measurement result is close enough to the known value, then the tool is in calibration. Sometimes you might want to confirm or check the calibration by checking several standards with widely varying sizes or amounts.
Which is the best calibration management software?
The process of calibrating different equipment can be processes to standard tolerance values. This process is not been an always easy to calibrate a large amount of equipment. By using this calibration management software of Qualityze, you can ensure equipment precision by coordinating and executing calibration procedures which comply with the standard values. This software enables you to standardize the calibration process in your organization and store all your device calibration records on a centralized platform. Calibration management software has the solution which helps to create the calibration criteria and tasks with the specific instructions to the right person for review, approval, and completion.
When will a radiac instrument require calibration prior to use?
A radiac instrument requires calibration prior to use if it has not been calibrated within the specified time frame set by the manufacturer or relevant regulations. Additionally, it should be recalibrated if it has been subjected to physical damage, significant temperature fluctuations, or if it shows inconsistent readings during testing. Calibration is also necessary after any maintenance or repair work that could affect its performance. Regular checks and calibration ensure accurate and reliable measurements.
What type of weights can be used as scale calibration weights?
Weights which have been carefully measured and crafted for the specific purpose of calibrating scales should be used in scale calibration. These weights need to be of a known weight in order to adjust the scale.
How do you make Benzoic Acid from Phenol?
Firstly we React with Zinc Granules to Convert Phenol to BenzeneThen We React with Methyl Chloride in presence of AlCl3 and Oxidise with Alkaline KMnO4 in Drastic Conditions and Hydrolyse with Acid.The first answer is correct, but there are two other possible ways to convert phenol into benzoic acid without first reducing it to benzene:There is no direct method of converting phenol to benzoic acid because there is no benzylic carbon on phenol. There is one indirect way of starting with phenol and ending up with benzoic acid that will definitely work, and there are two additional, two-step methods, one of which will most likely work. The second step of one of the two additional methods gives 1-hydroxyethyl benzene, and that reaction has been published. The other indirect way may or may not work since I thought of it, but was not able to find any information about it via an internet search. Information on the reaction may be found searching Chemical Abstracts either on-line (for which I do not have an account), or at a university library.Method 1. See the first Contributor's answer.Synthesis of the Intermediate. The intermediate is 2,3-dihydrobenzo[ß]furan. To see the structure of this, imagine a benzene ring that has two of its carbons in common with one molecule of tetrahydrofuran. The "ß" means that the oxygen of the tetrahydrofuran moiety is bonded to either of the common benzene-ring carbons.To make the intermediate, phenol is allowed to react with 1,2-dibromoethane in very dry ether or methylene chloride to yield 1-bromoethyl phenol and HBr. Slowly adding a slight excess of AlBr3 should easily cause a Friedel-Crafts alkylation to occur to give the intermediate and more HBr. Separate the intermediate by evaporating off the solvent and HBr.Method 2. From the intermediate, there is a known method to produce 1-hydroxyethyl benzene, or C2H5CH2CH2OH, which is easily oxidized by potassium permanganate to benzoic acid.Dissolve the intermediate in methylene chloride and allow it to react with triethylsilane in the presence of a catalytic amount of tris-pentafluorobenzene borane at room temp. for 22 hours. This will give 1-hydroxyethyl benzene in very high yield. Allow this to react with potassium permanganate to give benzoic acid.Method 3. I am not sure this method will give the product I would like. I know that it would not if the oxygen were attached to an aliphatic carbon, but the phenyl ring prevents the base, which I figured needs to be a strong one, from attacking the phenyl carbon.Add approximately 10% of the stoichiometric amount of sodium metal, relative to the amount of intermediate, to very dry tert-butyl alcohol. This will form sodium tert-butoxide, a very strong base, but a poor nucleophile thanks to its steric bulk. Add the intermediate drop-wise over a couple of hours while stirring rapidly. Distilling the reaction products is probably the easiest way to separate the product from the tert-butyl alcohol. The product should be phenyl acetaldehyde. An IR spectrum or a proton NMR will easily determine if the desired product were formed. Allowing the desired product to react with chromic acid will give benzoic acid.
