A. BOMB CALORIMETRY VIDEOa. Why should the water jacket of the calorimeter be reflectivb. Why is benzoic acid used to calibrate a bombprimeter?C. Why should the fuse wire notch the crucible cup?d. Why do you neepurge 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 SCIENCEDEPTUSEdreamstime

The value of heat or energy of any substance like food or fuel is the amount of heat released during…

Answered: A. BOMB CALORIMETRY VIDEO a. Why should…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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You are told to analyze the purity of your product with TLC. Which of the following TLC plates would indicate a pure product? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a A TLC plate where the product lane has one spot with an Rf value that exactly matches that of the starting material. b A TLC plate where the product lane has one spot which has a lower Rf value than the starting material. с A TLC plate where the product lane has two spots, one with a higher Rf value than the starting material and one with a lower Rf value. d A TLC plate where the product lane has one spot which has a higher Rf than the starting material.
1. Acids and Bases a. How reliable are the indicators (red cabbage and phenolphthalein) in the testing of these household substances? b. Suggest how these tests be converted to specific (numeric) pH values.
Subject: chemistry
(please type answer no write by hend).
Chemical Test Just fill out Table 2 by writing “+” if the compound is soluble/miscible in the solvent. Otherwise, write “-“. Table 2. Data on the results of chemical tests for C4H6O2. Chemical Test Observations + or - Ninhydrin test no colored spots on filter paper iodoform test clear pale-yellow solution Br2/CH2Cl2 (dark) clear red-orange solution Molisch test turbid colorless solution Tollen’s Test clear, colorless solution
Color Reactions Test Composition of Reagents Observation/s Molisch Seliwanoff Osazone Lugol (Iz in KI) Bial Fehling Benedict Barfoed Tollen
True or False: Spectrophotometric assays always track the rate of reaction through A[product] time a. True b. False
The labware we used in Quant Lab is divided into “qualitative” or “quantitative” analytical purpose. One of the important laboratory skills we learned is to know what specific apparatus is appropriate for the task at hand. For the following procedures, which SPECIFIC glassware, or balance ( CORRECT NAMES, be specific ) should be used? Mix K2Cr2O7 and KI solutions to be ready for titration. The mixture container is _______________ Measure the mV values of fluoride standard and sample solutions. Theoretically, the solution containers should be _______________________ Weigh 1 g solid KSCN that is poured into the thiosulfate – iodine titration. __________________
A pharmacy intern is asked to prepare 3 liters of a 30% w/v solution. The pharmacy stocks the active ingredient in 8-ounce bottles of 70% w/v strength. How many bottles will be needed as the source of the active ingredient?
An exothermic reaction took place in a reactor as shown in the figure . Cooling water is used to prevent overheating that could lead to a runaway reaction. Thus, the temperature controller, and the high temperature alarm were installed as safety features to the system. Other than the high temperature alarm, propose FIVE (5) other possible modifications or actions that can enhance the safety layer to the reactor system.
Paper chromatography
How are these equal? How would I know to match these? 25 km = 25,000 m 2.5 cm = 2.5 × 104 μm 0.25 m = 2.5 × 108 nm 2.5 mm = 2.5 × 10-6 km

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