Heat of Fusion

Q: 100 - 80 20 20 40 60 80 100 120 140 160 m/z 180 200 220 Br Br Br Relative Intensity

A: From the given above spectrum, the various fragments with their expected mass are shown in the table…

Q: i. ii. 111. Use the following data and Excel to plot a standard addition constant volume calibration…

A: The objective of this question is to show the plot of standard addition constant volune calibration…

Q: Humulin R U-100 insulin 30Units = ________ml

A: Interpretation-  To determine the volume of Humulin R U-100 insulin 30Units = ________ml -…

Q: Explain the differences between the following calibration methods and why they are needed. a)…

A: Calibration is the method of configuring an instrument so that we can observed a result within an…

Q: Compound 3 The M is at 144 m/z. 100- Relative Intensity SIEMELNGA 8 9 8 Compound 4 Relative…

A: The question is asking us to interpret the mass spectrometry data for two compounds, Compound 3 and…

Q: What can labs do to reduce error in GC- ms??

A: Gas chromatography- Mass spectrometry:  gc-ms has been used for the analysis of biological samples…

Q: Table #2 Worktable for BCA Assay Standard Water (μl) Tube # 1 2 3 4 5 6 7 8 9 0 125 325 175 325 325…

A: We have Calculate the amount of BSA protein added to each of the tubes.

Q: DH trotch| a 3325 tetch R Spectrum (liquid film) 0.아 2000 1600 V (cm") 000 3000 1200 800 laromatic…

A:

Q: Please solve the average molarity of the calcium hydroxide solution to determine the concentration…

A: Given the average molarity of Ca(OH)2(aq) solution = (0.0269 + 0.031496 + 0.028448) / 3 = 0.028948 M…

Q: Please could someone explain this with terminology relevant to GCSE

A: Ethane is a saturated hydrocarbon while ethene is unsaturated hydrocarbon.

Q: In this experiment, the eluant is O 1) petroleum ether O 2) water 3) dichloromethane 4) ethyl…

A: In the given question we have to choose the correct eluent used in the column chromatography.…

Q: n order to calibrate a pipet, you obtain the following data:   # of drops mL Trial 1 30 0.72 Trial 2…

A: Pipettes are used to measure liquid samples and transfer from bulk to reaction mixture. Pipettes…

Q: Find the mean volume and average deviation from the mean

A:

Q: Calculate the theoretical density using Figure 4. To do this, find where the 10 ppt vertical line…

A: We are given a graph for density of sample against the concentration of salinity. We need to…

Q: In order to calibrate a pipet, you obtain the following data:   # of drops mL Trial 1 30 0.72…

A: Given- Trial number Number of drops mL Trial 1   30 0.72 Trial 2 30 0.77 Trial 3 30…

Q: In Figure 7 above, the 3 columns represent 3 different samples. Which column(s) represent pure…

A: Concept:  TLC gives us an idea about the presence of the compound in the column or test tube. Single…

Q: Н F Н Н Br F F F F е но ATA Н CH3 H CH3 Н Н Br F Н CI H CI ана Н Н Н H/n H Н Br Н Br Н H H В Br Br F

A: Here the left side contains the structures of some polymers and the right side comprises of…

Q: Draw the starting alkene that would lead to these major products under these conditions.

A: Alkenes are hydrogenated by the reaction with hydrogen in presence of finely divided nickel,…

Q: 16) 3.1 x 10 kL+534x 10 kL-

A: In the given question, we have to find out 3.1×104kL + 5.34×106kL

Q: Relative intensity 100 50 15 mvz 20 & 41 40 57 60 68 81 80 85 (96) 100 OH H+ 194*. 120

A: The main aim of this question is to explain the mass spectrum peaks of given molecule. The mass…

Q: OD 450 Concentrations 0.105 0      0.144     3.06    0.406 31.9    1.233 108     1.909…

A: According to Lambert Beer Law, absorbance of a solution is directly proportional to concentration of…

Q: Value Number of sig figs 301.50 0.0500 2650 7.560 x 1023

A: To determine the number of significant digits .

Q: None

A: To evaluate the quotient of (2.53 × 10^{-4}) by (6.17 × 10^{2}): Divide coefficients: (2.53 / 6.17)…

Q: 50 Percentage Red No. 40 Soln 100% 80% 60% 40% Table 4.1: Dilutions of Red No. 40 & Absorbance…

A: Detailed answer shown belowExplanation: An experiment to measure the absorbance of Red No. 40 dye at…

Q: Question: 3 patient samples were run against a 5.0 mmol/L glucose standard using a hexokinase method…

A: Solving Q.2 needs the answer to Q.1.  I have solved both Q.1 and Q.2 below: #1: Concentration of the…

Q: What is MRI? How does it work (5 sentences max)? And how much does it cost each time?

A:

Q: Analytes than can be trapped inside Sephadex G-25 (1,000-5000) Cytochrome C (MW=12384) Aprotinin…

A: Sephadex is a bead-formed gel prepared by cross linking dextran with epichlorohydrin. It is supplied…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.