6. CONSTANT VOLUME CALORIMETRY Using a bomb calorimeter, 1.0 g of benzene (CeHs), a component of gasoline, was combusted to determine its energy content.2000 mL of water was used. a. Arrange the following steps of the CvC technique in chronological order. Connect the ignition wire to the sample using a cotton string. Cover the oxygen vessel bottom. Fill the calorimeter with 2000 mL of water.
Q: pls compute how to prepare the solutions 1. 100.0 mL 0.0500 M stock Ca2+ solution
A:
Q: 4.. After mixing 47 grams of glucose in 5 litres of 1X PBS, the final solution is %. A. 0.0094 B.…
A: Given Values: Weight of glucose = 47 grams The volume of the solution in which 47 grams of glucose…
Q: 1. Based on Figure 2, at 210 sec, the thermometer reading in the 30°C air was most likely closest to…
A: Answer:- Option D seems to be the correct choice. The temperature at 200 seconds is as marked in the…
Q: A fuel oil is fed to a furnace and burned with 25% excess air. The oil contains 87.0 wt % C, 10.0%…
A:
Q: O The job of splitter in GC is taking part of the sample. O Column in GC should be placed in a…
A: Introduction Splitter as the name suggests splits the sample. It controls the amount of sample that…
Q: What is the best method to filter the precipitate from it's reaction mixture? a Gravity filtering…
A: A product is precipitated from a reaction mixture and later collected by the process of filtration.
Q: 5. Give short description for each given Figure: 1.0- Parent glass Glass-ceramic 0.8 0.6- 04- 0.2-…
A: Dilatometric curve is the graphical representation of measure of expansion or shrinkage of a…
Q: Physical and Biological SciencesA bomb calorimeter was calibrated by burning 1.013 g of benzoic…
A: Since this is a disclaimer part with multiple questions, we will answer the first question alone…
Q: µc of a radioactive material 100 injected in a patient. If its physical half life time is 4 days and…
A: Introduction half-life, in radioactivity, the interval of time required for one-half of the atomic…
Q: MATERIALS: Potato Thermometer Test Tubes Bunsen burner and tripod set up Distilled water 0.1%…
A: Polyphenoloxidase ia a copper containing enzyme which catalyses the oxidation of di or tri hydroxy…
Q: 1- Are the following changes in conditions likely to increase or decrease retention time? a. faster…
A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 1. VELCO, the top pharmaceutical consultancy firm, has been appointed to track few stability related…
A: The drug is a chemical component that is administered to the organisms as a treatment for certain…
Q: | 4. Explain the following table in detail.? One by One food source explain in detail with respec I…
A: Fluoride is a mineral that can be found in a variety of ways in nature, including our food. Here are…
Q: If you heat Holiday “mulled (spiced) wine” to 40oC for 1 hour, you would expect that: a. it would…
A: Mulled wine is a wine that has been sweetened, spiced, mostly served warm. It is advised to barely…
Q: 1. Tools that do not need to be brought when sampling is… a. thermometer b. Hygrometer c. PH meter…
A: NOTE: Since you have asked multiple question, we will solve the first question for you. If you…
Q: What is the color-change in the LAMP reaction based on? Would it matter if a test person drank a…
A: Loop-mediated isothermal amplification (LAMP) is a technology created by Notomi et al. It's a…
Q: Take a look at this graph. The reactant curve is plotted in red, while the product curve is plotted…
A: Quantitative estimation of a substance is a process of determining the amount of substance present…
Q: 4) Record the temperature of each beaker every 2 minutes for 10 minutes on the data table below. 2)…
A: When insulation is provided, heat exchange between inside and outside is stopped.
Q: When 5.58 g of a solid mixture composed of NH4CI and CaCl2 was dissolved in 100.0 mL of water, the…
A: 2 questions are asked. According to guidelines, will answer the 1st question only. 100 ml water…
Q: Which of the following is considered chemical control? O a. None O b. Heat, alcohols, ethylene oxide…
A: Chemical control is way to restricting the growth of pathogens. It is based on substances that are…
Q: 1. The adsorption solution used in SO2 analysis is… a. Tetrachloromercurate(V) b.…
A: The adsorption solution used in SO2 analysis is… Tetrachloromercurate(II)
Q: 6. A new type of reaction catalyst was invented which would speed up the fermentation process in…
A: One tailed two tailed test It is a testing of hypothesis whether the hypothesis is true of false.
Q: 17 The diagram below shows the apparatus that can be used to investigate whether carbon dioxide is…
A: The respiration is a catabolic process in which the glucose and oxygen is broken down to form…
Q: .C The liquid-in-glass thermometers
A:
Q: 1. List the glassware/s and equipment you needed to measure 3.0915 grams of ZnCl 2 and dissolve it…
A: Introduction To conduct an experiment with precision and accuracy, the right apparatus and types of…
Q: 4. A bilayer polymer slab (1.2m long, 1.4m wide, 5 cm thick) is placed on a hot plate, which keeps…
A: This answer would have solved so nicely by handwritten note but you aksed for digitally so here you…
Q: A. BOMB CALORIMETRY VIDEO a. Why should the water jacket of the calorimeter be reflectiv b. Why is…
A: The value of heat or energy of any substance like food or fuel is the amount of heat released during…
Q: Put approx. 10 mL of vinegar (HC2H3O2) in a short glass bottle and add 1 piece of rust-free small…
A: Result: Iron(III) acetate Fe-(CH2COOH) will form. Observation: There will be a brown color coating…
Q: 100 µc of a radioactive material injected in a patient. If its physical half fife time is 30 days…
A: Half live (t1/2) of a radioactive material is the amount of time taken for the activity of the…
Q: a. Please calculate how many mOsmol/L is the above LVP solution? b. How many mOsm/L Ca++ and Na+…
A: Formula used are- Number of moles = weight (gram)÷ molecular weight(gram/mol) Osmolarity = moles÷…
Q: 7. A thermometer reading 75°F is taken out where the temperature is 20°F. The reading is 30°F, 4…
A: The thermodynamic temperature (also called average kinetic energy) measures the average energy of…
Q: 4. A 100.0-mL sample of brackish water was made ammoniacal, and the sulfide it contained was…
A: Introduction Using the formula C1×V1=C2×V2C1=C2×V2V1
Q: 1.What is not associated with increased skin cancer a. Arsenic b. Coal tar derivatives c.…
A: Since you have asked multiple questions, we will answer only the first question for you. If you want…
Q: 13-bioactive materials refers to c) A material, which upon being placed within the human body…
A: note - according to our guidelines ,we are supposed to answer only one. Answer of question number…
Q: Complete the diagram below for the analysis of an unknown salt. Drag the appropriate reagent into…
A: Analysis of unknown salt by appropriate reagent is asked.
Q: 3) The Chemical Solution determined by lambda max comaX ) oF a should be 9) The absorbtion specturm…
A: Lambda is considered as the eleventh letter in Greek alphabet. It has been demonstrated on…
Q: A 1.00 g sample containing NaHCO3 was dissolved in water and titrated using 0.500 M HCl. The sample…
A: A chemical laboratory method is used for the quantitative analysis of an analyte that is already…
Q: 5. What is the difference between dry salting and brine salting? A. Dry salting is soaking the raw…
A: Dry salting is utilized to draw the dampness ( moisture ) out of food, which assists with reducing…
Q: a) proportional to the charges on the two interacting atoms. b) proportional to the dielectric…
A: Electrostatic interactions are found to be a strong factor that determines the conformation of…
Q: A, high specific heat B. adhesion C. polarity D. high heat of vaporization Lu budrogenating…
A: Ans 5: - Water is a good solvent because of it's Polarity. The relatively small size of a water…
Q: 1. Explain the X-ray spectrum given in the figure below. Kaz liigu 80 90 Relative output 0 10 20 30…
A: Introduction An X-ray, also known as X-radiation, is a type of high-energy electromagnetic radiation…
Q: Data table Evidences of Chemical Observation Before the change Chemical System After the change…
A: Changes changes are those which are characterized by the formation of a new product or decomposition…
Q: A new analytical method to detect pollutants (D) in water is being tested. This new method of…
A: Pollutants are harmful contaminants that get introduced into the environment. Pollutants harm living…
Q: 1. A pediatric vitamin drug product contains the equivalent of 0.5 mg of fluoride ion in each…
A: Drug contains equivalent of 0.5 mg fluoride in each milliter. This means that in 1 mL, 0.5 mg…
Q: 2. Calculate the following: a. you are asked to prepare 10 NA slants and 5 NA stab in big tubes. How…
A: Growth media also known as culture media are used to cultivate microorganisms. These media are a…
Q: 10 grams of oil will dissolve completely in 1 Liter of water. O a. True O b. False
A: Oil does not dissolve in water as it is hydrophobic (water repelling) in nature and doesn’t form…
Q: 3 A patient requires 20 mg of Oramorph. The syrup comes as 10 mg in 5 ml. How much of the syrup is…
A: Patient requires 20 mg of Oramorph. The syrup comes as 10 mg in 5 ml. Amount of syrup required = ?
Q: 1. Two experimental procedures have the same reactants and the same products. Procedure A has 4…
A: As we know Every chemical reaction is carried out with the aim to obtain maximum efficiency and…
Q: A mixture containing only KCl and NaBr is analyzed by the Mohr Method. A 0.3172-g sample is…
A: NaBr is generally cerated by treating sodium hydroxide with hydrogen bromide. Sodium bromide is…
Q: 6. A student used Dumas procedure to calculate the Molar mass of a volatile liquid and collected…
A: Given, P = 750 mmHg = 750/760 = 0.987 atm R= 0.0821 atm•L/mol•K T T = 100.25 degrees celcius =…
Step by step
Solved in 3 steps
- A. BOMB CALORIMETRY VIDEO a. Why should the water jacket of the calorimeter be reflectiv b. Why is benzoic acid used to calibrate a bomb primeter? C. Why should the fuse wire not ch the crucible cup? d. Why do you nee purge the nitrogen out of the bomb calorimeter? can you know if the combustion of your sample is complete? f. How would you prepare liquid samples for bomb calorimetry? FOR PLM PAYSICA SCIENCEDEPTUSE dreamstimeDom Add Page 0.51, what is the concentration of the unknown (in mg/mL)? Show your work for full credit. 3. (1 point) Show the answer to the following question in correct significant figures. 10.219 +3.12 = 4. (7 pts) True or False. Circle the correct answer. True or False. A blank used to zero of spectrophotometer always contains just distilled water. True or False. The mode is the most commonly occurring number in a data set. True or False. One milliliter (mL) equals 1,000,000 microliters (µL). True or False. Peroxidase activity increases when the enzyme is boiled. True or False. Enzymes are carbohydrates. True or False. Denaturing involves an enzyme breaking down into individual amino acids. True or False. Hydroxlyamine is a competitive inhibitor of peroxidase. noint) How mony uL (miorolitora) orain 222 12 Show vour work for full oredit MAR étvProcedure Catalase Fill each labelled test tube (A- H) approximately 3 ml with fresh hydrogen peroxide. Add a small amount of material to be tested. perform three trials of each sample at different temperature (100C,370C, 500C) Note whether or not bubbles are produced and the rate of reaction Sample Expected Result Actual Result Interpretation Boiled Liver Bubbles Positive Boiled Leaves Bubbles Negative
- EXPERIMENT :DETERMINATION OF CHEMICAL OXYGEN DEMAND (COD) 1. OBJECTIVES To determine the chemical oxygen demand of the given wastewater samples. 2. PROCEDURE Preparing the Sample 1. Open a reaction vial with a white cap and add the specified volume. (Ensure that appropriate personnel safety equipment is used.) LR-/MR: 2 ml water sample HR: 0.2 ml water sample 2. Prepare a blank by using deionised water (TOC-free) instead of the sample (LR/MR: 2 ml, HR: 0.2 ml). 3. Replace the cap tightly. Invert the vial gently several times to mix the contents (The vial will become hot during mixing!) and digest the vials for 120 minutes in the reactor at a temperature of 150°C. 4. Remove the vials from the reactor and allow them to cool down to 60°C or less. Mix the contents by inverting each vial several times while still warm. Then allow the vials to cool to ambient temperature before measuring. 3:Results Sample COD reading (mg/L) Leachate 216 Factory 423…Lab: Isolation of beta-amylase from sweet potato Objective: To isolate the enzyme β -amylase using sweet potato as a source Materials Required: Sweet potato.Knife/peeler.Mortar and Pestle.A Blender.Blue capped tubes.20mM sodium Phosphate buffer at pH 7.Vortexer. Procedure: 1.Take a clean sweet potato and peel the skin off.2.Weigh the peeled sweet potato and note the weight.3.The sweet potato is cut into small pieces and transferred into a mortar and pestle.4.The pieces are crushed and then transferred into a blender.5.Add 40 ml of cold 20mM sodium phosphate buffer saline. Blend it until it forms a paste.6.Gently transfer the potato slurry into a blue capped tube.7.Allow the enzyme to extract over a 1 hour period at room temperature, with frequent vigorous stirring on a vortex mixer.8.Then the extract is filtered using a GF A glass fibre filter and the filtrate is collected in a new blue capped tube.9.Centrifuge the filtrate at 12000rpm for 20 minutes at 4 degree Celsius.10. After…A 15kg doe diagnosed with pregnancy toxaemia requires a dextrose fluidsupplementation. Given a dosage of 0.2ml/kg of body weight, prepare a 5%dextrose solution from a stock solution of 50%.
- Using the provided data on the activity part, what is the acquired R value? Is it acceptable or not? If not, what laboratory techniques should be improved? Concentration Absorbance 6 3.69267 8 3.69667 10 3.69667 12 3.701 14 3.708 16 3.70867Table of caffeine standards concentration Sample Conc, ppm Std1 16 Std2 32 Std3 48 Std4 64 Std5 80 If the volume used to make 100 mL of std 1 is 2 uL what is the concentration in M used to make a standard calibration curve? The standards are going to be used to build calibration curve to analyze caffeine in an energy drink. If 500 mL of the energy drink has target of 400 mg caffeine, how will you prepare the sample if you need 10 mL for the analysis ? . Caffeine MM=194.19 g/mol.A%252F%252Fbbniagaraccc.sln.suny.edu%252Fwe ignment Saved The drip rate of a dobutamine IV depends on the dose (in mcg/min), the weight of the patient, and the dobutamine solution concentration (in mg/ml). For a concentration of 2 mg/ml, the drip rate (in ml/hour), is described by the following formula: Drip rate = 0.03 [patient body mass (kg) × dose infusion rate (mcg/kg-min)] For a patient weighing 209 pounds and a dose infusion rate of 20 mcg/min for every kilogram of body mass, what is the IV drip rate? ml/hr
- MATCHING TYPE; Match A to B A. Acrolein tesT Benedicts test Biuret test Iodine test Barfoed’s test Molisch test Seliwanoff’s test Fehling’s test Salkowski’s test Furter-Meyer test B. A. The test for the presence of cholesterol. B. The test for reducing sugars in acidic solution. C. The test is used to detect cholesterol in a solution D. The test for the presence of starch/amylose. E. The test for presence of reducing sugars in alkali solution. F. The general test for carbohydrates. G. This method is used to detect the presence of tocopherols H. The test to distinguish monosaccharides from disaccharides I. The test for the presence of fats or glycerin. J. The test to determine ketohexose from an aldohexose.Explain how acetaminopen gives such spectroscopic and chromatographic graph by interpreting the peaks that appeared in the graphs. Fig1. Mass Spectrometric Chromatogram of Acetaminophen (the two graphs) Fig2. IR Spectrograph of AcetaminophenCodeine 6 mg/ mL Simple syrup qs ad 2 floz (60 mL) a. Calculate the number of grams of codeine needed b. If we have codeine 30 mg tablets in stock, how many tablets are required? c. Calculate the percentage strength and ratio strength of this preparation 2. Acetazolamide Using Acetazolamide 250 mg tabs X 10 Simple syrup qs 100 mL a. Make qs 250 mL b. Find concentration