Q: Based on the absorption spectra below, what would be the color of the pigment?
A: The colour that is absorbed is not reflected in fact its complementary colour is reflected.
Q: What is the purpose of sealing the flask with a balloon? What product is captured in the balloon?
A: Fermentation is the process of ATP generation by the microorganism. Carbohydrates are the substrate…
Q: In cation exchange chromatography,
A: Any positively charged ions that come into contact with the resin will be exchanged with other…
Q: 18. (0.1) Is it possible to use UV-VIS spectroscopy to quantify a non- absorber species? Provide a…
A: The spectrometer measures wavelengths of electromagnetic radiation (light) that interacts with a…
Q: The reaction in Fohl’s test will cause the formation of what compound? What type of reaction happens…
A: Fohl's test is the biochemical test of proteins for the detection of presence of Aminoacids with…
Q: What product is formed when the compound is treated with Benedict's reagent?
A:
Q: What is the purpose of doing the silver nitrate test? Write the chemical equation involved here
A: Introduction: Silver nitrate is an inorganic compound and its formula is AgNO3 with a molar mass…
Q: In a neutral solution, the [H] is : O 1.0x10-14M zero 1.0×107M 1.0x10-7M
A: The acidity of any solution is determined by the molarity of the Hydrogen ions. So, the pH of any…
Q: The two most abundant pigments in the chromatography results were carotene and Xanthophyll. What…
A: A photosynthetic pigment is a pigment which is found in green plants and do not absorb all the…
Q: Which of the following reagents can be used in the reaction in the photo? A.) pyridinium…
A: The oxidation of secondary alcohol to ketones is an important oxidation reaction in organic…
Q: How can the temperature of steam be raised above 100°C? Whichinstrument is based on this technique…
A: Steam is generated after the water boils. At normal atmospheric pressure, water boils at 100°C, and…
Q: A chromatographic separation of four compounds gave the following results. The dead time (tm) is…
A: Chromatography is a technique for separating a mixture in the laboratory. The combination is…
Q: What are the possible sources of error when experimenting with sodium bicarbonate and hydrochloric…
A: Sodium bicarbonate : Sodium bicarbonate is a salt that breaks down to form sodium and bicarbonate in…
Q: Why do wines typically have an alcohol concentration of12–13%?
A: Wine is an alcoholic beverage that is made by fermenting the juice of grapes. There are basically…
Q: How many kilocalories are needed to vaporize 5.8 mol of Br2?
A: Bromine is a dark reddish-brown fuming liquid with a pungent odor. Denser than water and soluble in…
Q: By the means of gas stoichiometry, how soaps are created?
A: Soap is made up of animal fat or plant oil, as well as caustic soda. It dislodges dirt from surfaces…
Q: Why is Hydrogen peroxide toxic to cells in high concentrations?
A: Hydrogen peroxide is commonly known as a cell-damaging agent that is produced during the normal cell…
Q: When conducting the Triple Sugar Iron Test, what is the result of the bacteria Staphylococcus…
A: Triple Sugar Iron Agar test is a test which has three sugar (Lactose, Sucrose, and Glucose) and also…
Q: Po-210 is an alpha emitter with a half-life of 138 days. Howmany grams of Po-210 remain after 552…
A: Given Values: t1/2 = 138 days t = 552 days No = 5.80 g Nt = ??
Q: Elemental gold is being recovered by electrodeposition from a solution with tiny amounts of Au(III).…
A: Gold is recovered by many process like cynide process etc.
Q: How many moles of tungsten(VI) oxide and hydrogen were required to produce the 5.00 g of tungsten?
A: Stoichiometry is a section of chemistry that involves using relationships between reactants and/or…
Q: what are the reaction of aqueous solution of Hg+2.
A: Water-based reactions are referred to as aqueous reactions. To comprehend them, you must first…
Q: Why is 350°C water emitted from a black smoker not boiling?
A: Black smokers are one of the types of hydrothermal vents that are found in deep sea beds and appear…
Q: Why is the absorbance spectrum of the iron (II) complex obtained first prior to measuring the…
A: Colorimetric analysis is based on how the intensity of a solution's colour changes as its…
Q: Complete the following precipitation reactions using balanced chemical equations:
A: The reaction in which the formation of insoluble salt when two soluble salts mix together in the…
Q: If a 0.2g of oil consumed 1ml of sodium thiosulphate, calculate its Iodine value and classify the…
A: Lipids are classified into fats, oil, and wax. Fats are also called triglycerides, where three fatty…
Q: What is the percentage of ethyl alcohol by volume in 750 ml grape wine with 93.8 ml ethyl alcohol?
A: The wines are produced from fruit juices that are rich in glucose. The juice is allowed to ferment…
Q: What is the role of imidazole in Ni-Affinity Chromatography?
A: Chromatography is the technique where the mixture of proteins gets separated based on various…
Q: Name at least two alternative chemical tests that can be performed to characterize functional…
A: Organic compounds usually can be divided into two parts: a reactive part; functional group and alkyl…
Q: Calculate the enthalpy of vaporization at the normal boiling point (760 mmHg) of the liquid(water,…
A: The enthalpy of vaporization also known as heat of vaporization or heat of evaporation is the amount…
Q: What is the volume (in mL) of ethanol in the bottle?
A: Volume is calculated by the % by volume formula, that is volume of solute dissolved in the volume of…
Q: What is an absorption spectrum? The following graph is the visible absorbance spectrum of an…
A: There are different types of electromagnetic radiation. The different radiations have different…
Q: How many liters of dry hydrogen gas, measured at 798 mmHg and 21C, will be released by the…
A: When change in pressure, volume and temperature occurs than the combined gas law is used. Combined…
Q: Which of the following would you expect to elute first from a silica gel column eluted with hexane:…
A: Chromatography is a technique used for separating mixture in a laboratory. The mixture requires a…
Q: What happened to the distribution of methylene blue crystals in the beaker water over time? What…
A: Diffusion Diffusion is a process involving the movement of molecules "down the gradient" i.e. from…
Q: The colour change for the test reaction of an alkene with KMNO4 is from: A. Purple to black/brown O…
A: Potassium permanganate is an inorganic compound and is of purple colour due to permanganate ion. It…
Q: How does a nitrate addition prevent sulfide souring ofcrude oil?
A: The presence of a higher concentration of sulfur in crude oil defines the sour crude oil. It is an…
Q: According to this standard curve for chlorophyll dissolved in ethanol, what is the concentration of…
A: the concentration of betacyanin = 3 micromolar
Q: Explain the mechanism of denaturation for the following agent: 1. Hydrochloric acid 2. Lead (II)…
A: Since you have asked a question with multiple sub-parts, we will answer the first 3 sub-parts. To…
Q: Give the reagent or chemical test that would differentiate the following pairs of compounds. Write…
A: Multiple questions asked. I will answer 1st question which has subparts in accordance with…
Q: Is this an drawing of the chemical reaction involved in Lugol’s test?
A: Carbohydrates are molecules that include carbon, hydrogen, and oxygen and have the formula (CH2O)n.…
Q: What is the product of the b emission of gold-198?
A: Beta decay is a type of radioactive decay in which a beta particle is emitted from an atomic…
Q: What chemical reaction causes the color change of diphenylamine sulfonate indicator?
A: Organic compound diphenylamine An amine is coupled to two phenyl groups in the molecule, which is a…
Q: What volume of a 40% v/v solution must be used to produce 500mL of 5% v/v solution?
A: The concentration of a drug is generally determined by the dilution of the drug. Various types of…
Q: How can the temperature of steam be raised above 1008C? Which instrument is based on this technique…
A: Heat is one of the antimicrobial agents.
Q: What does an acid based reaction that doesn't contain carbonate or bicarbonate produce?
A: When an acid and a base are placed together, they react to neutralize the acid and base properties,…
When oxygen is exhausted in a milk sample, what color is the methylene blue indicator?
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- The two most abundant pigments in the chromatography results were carotene and Xanthophyll. What colors are absorbed or reflected by various pigments and how much is there?Cyclophosphamide, after reconstitution, has a concentration of 20 mg/mL. The patient, who weighs 67 kg and is 155 cm tall, is ordered cyclophosphamide in 250 mL NS. How many mL will be added to the bag?fill in the volumes required to make the various dilutions of Coomassie Blue and their respective concentrations. show sample calculations.
- Using the formula V₁D₁ = V₂D2, what volume of a 1/100 (10-2) dilution would you need to produce 100 mL of a 1/10000 (10-4) dilution? (Note: provide your answer in decimal format to three decimal places.)A volumetric flask made of Pyrex glass is calibrated at 20 °C.It is filled to the 100 mL mark with 35 °C acetone. After the flask is filled the acetone cools and the flask warms so that the combination of acetone and flask reaches a uniform temperature of 32 °C. The combination is then cooled to 20 °C. a) What is the volume of the acetone when it is at 20 °C? b)At the temperature of 32 °C, does the level of acetone lie above or below the 100 mL mark?A 500 mg vial of Kefzol needs to be reconstituted to a final concentration of 275 mg/mL. Assuming the Kefzol powder adds 0.2 mL of volume, how much sterile water do you add to achieve this concentration?
- You receive an order for 750 mL of 27% dextrose solution. You have available D50W, 1000 mL. How many mL of D50W and sterile water are needed to complete the order? *The maximum allowable concentration of chloroform, CHCl3, in drinking water is 100 ppb. What is the maximum amount (in grams) of chloroform allowed in a glass containing 400 g (400 mL) of water?The commercial hydrogenation of vegetable oil often leads to a trans acid. Explain this statement. 2.0 Marks For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).