What is the chemistry principle behind when (treatment: heavy cream) is subjected to CHILLED TEMPERATURE? What is the effect in beating time, stability (%drain) and volume foam (specific gravity) is important? see the data below Treatment (Heavy Cream) Beating Time (min) Stability (%drain) Volume of Foam (Specific Gravity) (Room Temperature) 20 No drain 0.94 Heavy Cream (chilled) 20 No drain 0.76 Heavy Cream with sugar and vanilla 20 No drain 0.88 Heavy Cream (over-whipped) 25 No drain 0.83
Q: 2- How much solution (in ml) of silver nitrate at a molar concentration of 0,0540 mol/l is needed as…
A: The double replacement reactions occur when ionic chemicals in a solution react with each other.…
Q: The local anesthetic procaine hydrochloride can be administered by local injection. If the procaine…
A: Drug Medication has physiological effect and causes significant changes in the body. Factors…
Q: Using conversion factors, solve each of the following clinicalproblems:a. A nurse practitioner…
A: Ans: Given values: Stock of promethazine injection : 25mg/mL Dose required : 12.5 mg Ampicillin…
Q: A glucosamine solution of unknown concentration was diluted as follows: 1 mL of the solution was…
A: Glucosamine is a polysaccharide found in the outermost structure of chitinous animals. In humans, it…
Q: Based on the ternary phase diagram, a binary mixture of furfural and water will always split into…
A: * Ternary diagram is triangular coordinate system with axes at edges these are used to plot three…
Q: Below is a Beer's Law Plot for the concentration of a specific colored compound x. A solution of…
A: Beer Lambert's plot It's a graph showing a compound's absorbance vs. concentration. It is a straight…
Q: Combustion of a fuel sample in a bomb calorimeter increases the temperature of the entire system by…
A: Given: Mass of water (m1 )=1700 gIncrease in temperature(∆T1)=5.10°CMass of water(m2)=2200Increase…
Q: Enzyme A, B, and C having the following properties are to be separated by various chromatography at…
A: The chromatographic process is generally helping a solvent that destroys an adsorbed substance from…
Q: What is the net ionic equation for the following chemical reaction? Pb(NO3)2(aq) + 2 NaCl(aq) → 2…
A: The net chemical equation for a reaction that lists only those species participating in the…
Q: The Thermal conductivity of rock salt measured at a temperature of 500 degrees C what value would be…
A: thermal conductivity at 500°C would be about 0.2 W/m°C less than the thermal conductivity at 400°C…
Q: A drug has a measured diffusivity of 5*10^-6 cm^2/s^-1 at 37 degree Celsius. What is this drug’s…
A: The Stokes-Einstein equation is used to measure the viscosity of various solutions, and the…
Q: The unknown metal sulfates are hygroscopic and will absorb water from air. The unknowns must thus be…
A: Hygroscopic properties of sulfate-containing metals are crucial to understanding the atmospheric…
Q: Based on the pH of your drug, if your drug was in a high concentration in the blood, how would it…
A: The drug captopril is used to treat Hypertension and conditions of heart failure as it vasodilates…
Q: You have a 75 mM stock solution of a drug with the formula CisH1,N2O2l. A doctor has prescribed 230…
A: Drug calculation is a procedure in pharmacology in which the concentration of the drug is…
Q: What is the Isoelectric point of Y-R-S (pH 7-11) What is the isoelectric point of N-G-L (pH 1-5)
A: Isoelectric point (PI) is the pH at which the molecule has no net electrical charge. Each amino acid…
Q: The pH probe/meter uses following equations: Ecell = L + 0.0592 log a1 = L - 0.0592 pH Where L =…
A: Asked : Effect on measured pH value if acid concentration is increased HCl is an acid
Q: Sugar solution is being heated to 83 o C in a jacketed pan made from stainless steel, 1.6 mm thick.…
A: The heat flow or work indicates the energy transfer on or by the system in chemical thermodynamic.…
Q: Predict the diffusivity of human serum albumin at 293 K in water as a dilute solution and compare it…
A: Cells are considered as structural and functional units of life. Cells need to exchange nutrients,…
Q: For numbers A to I, determine the type of solubility each drug has based on USP: Freelysoluble…
A: Substances having the ability to dissolve is termed as soluble substance. And that ability is called…
Q: , cylindrical tube
A:
Q: For each of the following chemicals, name the general class they belong to, discuss their solubility…
A: The amount of chemical material that can dissolve in water at a given temperature is referred to as…
Q: For a powder binding process that mixes a 1:2 volume ratio mixture of semi-crystalline polyethylene…
A: Given: Density of semi-crystalline substance = 0.900 g/cm3 Density of crystalline substance = 0.998…
Q: We have isolated a mixture of 2 protein of the same molecular weight but different isoelectric…
A: The cationic means negative charge and anion is a positive charge column in column chromatography.
Q: Scott test is one of the methods used for screening for Cocaine in Forensic Chemistry. The multi…
A: Asked : Given option which is correct regarding first step of the test
Q: Write solubility product constant expression and calculate numerical value (Ksp) of each ionic…
A: AgCl(s) gives Ag+(aq.) + Cl-(aq.) AgCl molecular weight= 143.32 g/mol 5 gm AgCl in 100 ml water…
Q: Indicate the contrast statements of the following chromatographic techniques of separation. A. A…
A:
Q: Solve this problem
A: Given, The amount of heat absorbed is 26.06 J. The mass of the diamond is 2.10 g. The initial…
Q: 1. The solubility of magnesium hydroxide (Mg(OH)2) is approximately 3.70 x10-³ M at room…
A:
Q: Calculate the solubility of Ag,CO3 (in mol/L) at 25 °C in a 0.02 M Na,CO3 solution Hint: Ag,CO3(s) →…
A: Solubility equilibrium is a type of dynamic equilibrium that exists when a chemical compound in the…
Q: For the serial dilution, your stock solution must have a concentration of 3.5 mg/mL. How much…
A: RBC is the red blood cell and RBC suspension is normally used in serological testing and are usually…
Q: The ΔG°′ value for glucose-1-phosphate is -20.9 kJ/mol. If glucose and phosphate are both at 4.8 mM,…
A: Given values: ∆G° = -29.9 kJ/mol [Glucose] = 4.8 mM [phosphate] = 4.8 mM [Glucose-1-phosphate] = ?…
Q: sample of KNO3 ( 225 g) is completely dissolved in water (250 g) at 333.15 K. The solution is…
A: Asked: mass of KNO3 (in g) will crystallize out of the solution at 273.15 K
Q: The solubilities of three salts in water are shown in the graph. 1000 Pb(NO,), 900 For each salt,…
A: 500 gm of each salt is mixed with 1 L water at 40 degree Celsius.
Q: At -47°C the vapor pressure of ethyl bromide is 10 mmHg, while that of ethyl chloride is 40 mmHg.…
A: Given : Mole fraction of ethyl chloride = 0.80 Vapor pressure of ethyl bromide = 10 mmHg Vapour…
Q: If there are 15 mL in one tablespoon, how many milliliters are contained in 3.5 tablespoons of a…
A: 1 tablespoon contains 15ml of medication (Given) 1 tablespoon = 15ml (a) 3.5 tablespoon of liquid…
Q: The pH probe/meter uses following equations: Ecell = L + 0.0592 log a1 = L - 0.0592 pH Where L =…
A: Asked: Correct option out of the given options
Q: Which lipid sample (butter/ oil) is soluble or miscible in 70% ethanol? Explain. Do you think the…
A: Solubility and miscibility are mostly interchangeably used because the resultant solution seems to…
Q: What is the change in entropy when 150 mL of cold (278 K) water is added to 150 mL of near-boiling…
A: According to thermodynamics, entropy is the amount of unavailable energy in a system. It is denoted…
Q: osmotic pressure
A:
Q: If you added three proteins (Protein A, pI 5.0; Protein B, pI 6.0; Protein C, pI 7.0) to an anion…
A: The nature of the column depends on the volume and the concentration of the sample and the…
Q: Time Mg (s) +2 HCI (aq) MgCl, (aq) + H, (g) The reaction between solid magnesium and hydrochloric…
A: A chemical or a biochemical reaction occurs when the reactant molecules combine or collide together…
Q: 10 Determine the Hill coefficient for the following binding data using a linear method. [L] in…
A: The Hill plot is a graph graph which enables us to check whether the protein in question exhibits…
Q: What might happen if you omit potassium tellurite in using GCM?
A: Introduction Giolitti-Cantoni Broth is an anaerobic enrichment broth for Staphylococcus aureus in…
Q: An analysis of city drinking water for total hardness was done by two students in the laboratory and…
A: Hardness of water is defined as the amount of dissolved calcium and magnesium in the water which is…
Q: The order is for 200 mg of drug to be administered IM. The directions on a vial containing 1 g of…
A: Calculating medications is an important part of nursing practice. Using the available dose, the…
Q: 7. You want to separate these four proteins in a mixture: Isoelectric point Mol. Weight (kDa)…
A: A Physical method for the separation of compounds is called chromatography. In two…
Q: What information do we get if we calculate the ratio of the Absorbance value at 260 nm to the…
A: A spectrophotometer is a device that is used to calculate the absorbance of light passing through a…
Q: In an experiment, separation of albumin from chicken liver was attempted at 31%, 58%, and 65%…
A: Ammonium sulphate is commonly used for protein precipitation, separation, and crystallization.…
Q: You are a graduate student who is trying to conduct an experiment. For this experiment, you need to…
A: In order to make working solutions, it is often required to dilute the available stock solutions.…
What is the chemistry principle behind when (treatment: heavy cream) is subjected to CHILLED TEMPERATURE? What is the effect in beating time, stability (%drain) and volume foam (specific gravity) is important? see the data below
|
Treatment (Heavy Cream) |
Beating Time (min) |
Stability (%drain) |
Volume of Foam (Specific Gravity) |
|
(Room Temperature) |
20 |
No drain |
0.94 |
|
Heavy Cream (chilled) |
20 |
No drain |
0.76 |
|
Heavy Cream with sugar and vanilla |
20 |
No drain |
0.88 |
|
Heavy Cream (over-whipped) |
25 |
No drain |
0.83 |
Step by step
Solved in 2 steps
- The material to be heated is in a long, cylindrical tube, and is viscous enough that any flow inside the tube can be ignored, i.e. the heating is by conduction alone). Also, consider the glass of the tube to be very thin so its thermal resistance can be ignored. The tube diameter is 1 cm and the properties of the material are the same those of water, given by 0.64 W/m*K, 1000 kg/m3, and 4180 J/kg*K, for thermal conductivity, density, and specific heat, respectively. The water bath temperature is 65 °C, and the initial temperature of the material is 27 °C. Without the agitation of the water bath, the heat transfer coefficient can be considered to be 128 W/m2*K. Considering the tube to be a long cylinder, how long does it take for the coldest point to heat up to a temperature corresponding to 99% of the total possible temperature increase? If the surrounding how water is agitated using a stirrer, leading to a considerably large surface heat transfer coefficient, how long does it…The Thermal conductivity of rock salt measured at a temperature of 500 degrees C what value would be the closest ?i) Write down the equation derived from your Excel generated standard curve and describe its components; ii) provide the values of the absorbance data of the unknown sample (do NOT show the absorbance data of the glycine standards). Show all details of the working out of your calculation. Indicate all units! Provide the answer with two decimals precision iii) state the answer in a full sentence. (note: avoid mathematical symbols [=, +, -, etc] in your answer sentence).
- For the serial dilution, your stock solution must have a concentration of 3.5 mg/mL. How much diluent must be added to the 5.3 mg/mL red cell to prepare the stock solution? Show pertinent solution/s. 7. If the red cell suspension is the stock solution, what is being quantified in this test? What diluent/reactant should be used to detect your answer in number 7?The unknown metal sulfates are hygroscopic and will absorb water from air. The unknowns must thus be kept in desiccators to remove any absorbed water. Howwould your results be affected if your unknown sample was not desiccated? Would this error cause your calculation of the mass percent of sulfate in the unknown to be too high or too low? Explain.The ΔG°′ value for glucose-1-phosphate is -20.9 kJ/mol. If glucose and phosphate are both at 4.8 mM, what is the equilibrium concentration of glucose-1-phosphate?
- A glucosamine solution of unknown concentration was diluted as follows: 1 mL of the solution was diluted to 5.0 mL. A 0.3 mL aliquot of this solution was diluted with 0.7 mL of water; the absorbance of this was measured and found to be 0.440 (uncorrected, must subtract blank). What is the concentration of the original undiluted glucosamine hydrochloride solution in µmol/mL? Given: Corrected absorbance = 0.395 y= 1.165x+0.055 Standard equationDescribe the preparation of the following solutions include all mathematic calculations and equipment of the laboratory needed A.500 mm of a solution of KNO 1.50 M B. 150 g of a solution 5.0% of NaC2H3O2 C. 500 mm of a solution of NaOH 0.50 M from a solution of NaOH 6.0 MAn unknown mixture is known to contain only Ba(OH)2 (MW=171.34 g/mole) and NaOH (MW=40.0 g/mole). If the mixture is known to contain 45% by mass NaOH, and 8.0 grams of the mixture is dissolved completely in 50.0 ml of solution, answer the following. c).If 10.0 ml of a 0.2 M solution of Na2SO4 was added to the 50.0 ml solution, what would be the final concentration of Na+ in solution.
- Predict the diffusivity of human serum albumin at 293 K in water as a dilute solution and compare it with experimental data. Assume the following: The molecular weight of human serum albumin, MA= 72,300 kg/kmol The viscosity of water at 293 K is 0.897 x 10-3 Pa∙s The experimental data value is 5.93 x 10-11 m2/s.What is the change in entropy when 150 mL of cold (278 K) water is added to 150 mL of near-boiling (368 K) water? Ignore any potential heat loss to the surroundings; only consider the water. For water, Cp = 75.3 J K-1 mol-1.pH 3.5 4.5 5.5 6.5 7.5 8.5 Absorbance 0.098 0.027 0.068 0.028 0.032 0.054 Concentration in diluted supernatant (mg/ml) 0.196 0.054 0.136 0.0056 0.0064 0.0108 Concentration in undiluted supernatant (mg/ml) 0.98 0.27 0.68 0.28 0.32 0.54 Formula for the amount (g) of soluble proteins in the soy flour extract: In 15 ml of soy flour extract (with 1/50 dilution), Soluble protein (g) = (C x V x F) / 1000 C = concentration (mg/ml); F = dilution factor; V = volume of solution (ml) Calculate the % solubility of protein in the soy flour (Assume the soy flour contains 35% protein (w/w))