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- True or false and why is false 1 There are 2 major classes of keratins: alpha keratins (found in mammals) and beta keratins (found in feathers and scales of birds and reptiles) 2 One estimate of mobility within a crystal is the B-factor that reflects spreading or blurring of electron density 3 In NMR, the longitudinal relaxation time (T1) reflects the rate at which magnetization returns to the longitudinal axis after a pulseDescribe the following scanning electron microscopy of powder micrographs of CoIf you have an octahedral site (Coordination Number 6). What is the minimum rcation/ranion? Prove your answer.
- 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.atomic radius is 0.1430 nm calculate the planer density of (211) plane at BCC structureStainless steel typically contains 1% carbon, 1-5% manganese, 0.05% phosphorus, 1-3% silicon, 5-10% nickel, and 15-20% chromium. Using a periodic table of elements to determine the pertinent information (e.g. atomic radii, valence, electronegativity, etc) of all the impurities, determine whether each impurity is likely to be substitutional impurity, interstitial impurity, or a second phase particle.
- Mass spectrometry and X‑ray diffraction are common biochemical techniques for characterizing proteins. Classify each statement based on whether it applies to mass spectrometry, X‑ray diffraction, or both techniques.The absorbance values observed during the determination of the complex stoichiometry with the Job method using the spectroscopic method were plotted and the following correct equations were obtained. According to this, what is the n value of the compound formed by Fe + 3 and SCN- ions?1. Line equation: y = 2.6188x + 0.1608 2. Line equation: y = -2.5963x + 2.7203You are given the following data : Peak order (n) Diffraction Angle (2q) 1 38.6 2 55.7 3 70.0 Determine whether sample is fcc or bcc or neither. Give reason for your choice.
- The absorbance values observed during the determination of the complex stoichiometry with the Job method using the spectroscopic method were plotted and the following correct equations were obtained. What is the n value of the compound formed by Fe + 3 and SCN- ions? 1. Line equation: y = 2.6188x + 0.1608 2. Line equation: y = -2.5963x + 2.7203 a) 1 b) 3 c) 0.5 d) 2 e) 5The absorbance values observed during the determination of the complex stoichiometry with the Job method using the spectroscopic method were plotted and the following correct equations were obtained. What is the n value of the compound formed by Fe + 3 and SCN- ions? 1. Line equation: y = 2.6188x + 0.16082. Line equation: y = -2.5963x + 2.7203solve i, ii and iii please. Given caesium has a body-centred cube with density of 1.93 g/cm3. i. Determine the lattice constant of caesium if the molar mass of caesium is 132.9 g mol-1. (NA = 6.022 x 1023 atom mol-1) ii. Assuming the body-centred caesium is replaced by an anion, X, suggest the type of structure of this derivative. iii. Determine coordination environment for both ions.