Sublimation is preferred over recrystallization when you work with an amount of solid material to be purified that weighs: A) at least 1 kg B) about 100 mg C) about 1 mol D) about 1000 ml O A O B OC D
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- Phase change properties of pure substances Cu C6H12 C (C6H5CH₂)₂0 (CH3CH₂)20 CH3CH₂OH (CH₂OH)2 NH₂COH Au C C6H14 H₂ copper cyclohexane diamond dibenzyl ether diethyl ether ethanol ethylene glycol formamide gold graphite hexane hydrogen 1084.62 6.7 4440 1.8 -116.22 -114.14 -13.0 2.57 1064.18 4489 -95.27 -259.16 2560 80.7 298 34.4 78.24 197.5 217 2836 3825 68.72 -252.879 0.385 1.841 0.51 2.369 2.438 2.394 2.389 0.129 0.709 2.27 14.304 13.26 2.68 -- 7.19 4.931 9.96 8.44 12.55 117.4 13.08 0.12 29.97 45.6 26.52 38.56 50.5 60.2 324 28.85 0.9 280.3 193.7 242 446 -- 234.4 -240.212 40.2 35.9 61.7 80 29.9 12.695. Which of the following actions would increase foam fractionator efficiency? O Lowering salinity (such as complete freshwater) Increasing the contact time within the foam fractionator Increasing bubble size through the fractionator Decreasing contact time between water and bubblesB English II O Emmaree He X STOP- C X O Emmaree Her x A Chemistry O L-Unit 5.1 Te x G 2 the relation -> A goformative.com/formatives/60466291040ceeSe516940cc Mr. Villarreal 3. A bag of potato chips is packaged at sea level (1.00 atm) and has a volume of 215 mL. If this bag of chips is transported to Denver (0.775 atm), what will the new volume of the bag be? Show Your Work Agas atapreceure of 40atre and 15 0C O Type here to search 1:19 PM 3/29/2021
- 4) In general, if the viscosity is very high at the melting position of the corresponding crystalline phase which would form the melt, it is much easier to form glass for this melt. True or False 5) The glass fiber is possible to have a tensile strength even larger than that for iron or structural steel. Therefore, in the practical applications, we should be able to use glasses for the same purposes of the iron or structural steel. True or FalseQ3: A unit cell of diamond structure belongs to the cubic crystal system and contains eight atoms of the same type and their positions are as follows. (000) Compute the structure factors Fok and |F|2Tooling for a vacuum deposition system is cleaned and reassembled. Unfortunately, a drop of water 0.125 cm3 in volume is left in the bottom of a screw hole. Due to the obstructed path to the pump, a negligible amount of water escapes during the early stages of pumpdown, and the drop becomes a virtual leak at a chamber pressure of 4.3E-06 torr. Find the volume of gas formed by the water at this pressure (assume it stays at room temperature). The density of water is 1g cm-3 and the molecular weight 18 g mole-1. (First, determine the number of moles in the drop of water, and use the ideal gas law to determine the volume)(b) To make this result clearer, what is the added time (in hours) to pump out this chamber due to this droplet if the pump, at that pressure, has a rate of 1480 L/s?
- You are given three unknown samples stored in screw-cappedcontainers and was told to analyse them. You noted that Container A iscloudy and have some particles that are staying near the bottom of thecontainer. Container B is translucent while Container C is transparent. If thecontents of Container A can be separated by simple decantation,what isthe particle size that BEST describes its composition?i. <1 nmii. 1 nmiii. 1 nm-100 nmiv. >1000 nmTwo aqueous hydrogen bromide solutions containing 1.00 wt% HBr (SG=1.0041) and 60.0 wt% HBr (SG=1.6731) are mixed to form a 3.54 M HBr solution (SG=1.1935). What feed rate of the 60.0 wt% HBr solution would be required to produce 1350 kg/hr of product?Consider 8.5 kg of austenite containing 0.52 wt% C, cooled to below 727 C (1341'F). (a) What is the proeutectoid phase? (b) How many kilograms each of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid phase form? See Animated Figure 10.28
- - & Sketch New · C $ 7 ♡ www 1500 kg/m³ O 3000 kg/m³ 5000 kg/m³ 7000 kg/m³ 9000 kg/m³ 44 < HD E Material X has an atomic radius R = 0.125 nm, an atomic weight of A = 51 g/mol, and a body centered cubic (BCC) crystal structure. Calculate the mass density of this material. Hint: Do your calculations in SI units, as this will help avoid numerical errors from unit conversions. Choose the answer closest to your calculated value.1°F unny 1 O app. F1 edu.co 22 W S X CH3 | III CH3 F2 TH || bo CH3 CH3 # 3 E DII D Identify the monomer(s) used in the production of this polymer using an addition process. CH3 polypropylene IV Polypropylene (shown below) is a polymer used in many plastic bottles, containers, and packaging. F3 C CH3 You CH3 $ 4 R F F4 V % 5 F5 T G 49 Question 5 of 20 < 6 F6 B Y H F7 & 7 U N W A) I B) II C) III D) IV PrtScn J F8 8 Home I M F9 9 K End F10 PgUp L F11 PWhat do the symbols TD and TC mean on volumetric glassware?