Consider the extraction scheme below. HO dissolved in DCM extract with 10% NaOH H2O layer organic layer A Select the structure that best fits the predicted structure A.
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- FAlpOLSdkkCb8p7Lki9hSE-PEqyqO02a33Gom9YvugXuốb5uYkOPEUw/formResponse plify ern. Karely 1. Serena mixed two samples together: a gray solid that smells like flowers and a gray solid that smells like bleach. She analyzed the results and found two ending substances. One of the ending substances was a white solid. This ending substance is made up of the repeating group of atoms shown below. Which of the diagrams to the right shows the repeating groups of atoms that make up the samples Serena mixed together? Sample 1 Sample 2 An ending substance Sample 1 Sample 2 Properties: Bray solid mells like flowers Properties: gray solid smells like bleach Properties: white solid Sample 1 Sample 2 smells sour Sample Sample 1 Sample A. Diagram A B. Diagram B C. Diagram C O O OCrystalline polyethylene has a density of 1000 kg m-3and amorphous polyethylene a densityof 865 kg m-3. Calculate the volume fraction crystallinity of a sample of branched polyethylenewhich has a density of 900 kg m-3. Why is the crystallinity of this sample so low?The following data apply to a 1g sample of a granular powder Volume of the solid alone = 1 cm3/2g Volume of intraparticle pores = 0.2 cm3/1g Volume of spaces between particles = 3.2 cm3/2g Volume after tapping = 1.4 cm3/1g What is the bulk volume?
- A device to understand how iron behaves at high temperatureswe want to design. This device (with 1% accuracy) allows the change in volume (heating) of a 1cm 3 iron cube.the resulting polymorphic transformation) must be able to feel. HMK structure in iron 911 0 C and latticeparameter 0.2863 nm. At 913 0 C, it has YMK structure and its lattice parameter is 0.3591 nm. Of measuring instrumentDetermine the accuracy tolerance it needs (i.e. at least how many cm 3 to detect a changemust). It is necessary to use at least 6 digits after the comma in this question. Hint: YMK first andFor HMK, the volume of an atom is found and then, using the number of atoms in each structure, the ironThe question can be started by finding the different volumes.The following data were obtained for four compounds separated on a 20 m capillary coloumn. Compound t,(min) w(min) A 8.04 0.15 B 8.26 0.17 C 8.43 0.18 (a)Calculate the number of theoretical plates for each compound and the average number of theoretical plates for the column. (b) calculate the average height of theoretical plates. (c) explain why it is possible for each compound to have a different number of theoretical plates?The following tests are used for control of organic impurities in organic medicinal substances, except ... O a. Thin Layer Chromatography O b. Viscosity O c. pH of solution O d. Solubility
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