1. Use the melting point data to classify the ten substances into categories. List the categories, include the criteria for belonging to each group, and then place the substances into the appropriate groups. All data must be classified. Do NOT include the unknown substances (T, Q, H, Z, R)
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- Please provide a justification for the following statement: lithium chloride dissolves in polarorganic solvents. What would you expect for other group I metal halides?What is the Madelung constant for MgO (rock salt) structure? Include only the first 3 terms. Give your answer to 3 significant figures.What is the peroxide effect? What does it mean when there is a reversal of orientation? Detailed answers are appreciated. Thanks in advance!
- You and a partner are asked to complete a lab entitled“Oxides of Ruthenium” that is scheduled to extend over twolab periods. The first lab, which is to be completed by yourpartner, is devoted to carrying out compositional analysis.In the second lab, you are to determine melting points. Upongoing to lab you find two unlabeled vials, one containinga soft yellow substance and the other a black powder. Youalso find the following notes in your partner’s notebook—Compound 1: 76.0% Ru and 24.0% O (by mass), Compound2: 61.2% Ru and 38.8% O (by mass). (a) What is the empiricalformula for Compound 1? (b) What is the empiricalformula for Compound 2? Upon determining the meltingpoints of these two compounds, you find that the yellowcompound melts at 25 °C, while the black powder does notmelt up to the maximum temperature of your apparatus,1200 °C. (c) What is the identity of the yellow compound?(d) What is the identity of the black compound? (e) Whichcompound is molecular? (f) Which compound is…potassium ferrioxalate find and solve these with showed work 12Mn0-4 + 5C2O4-2 + 16H+--> 2Mn2+ + 10CO2 +8H2OA 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.
- Imagine a pyramid with a hexagonal base. For thispyramid determine:a-) The degree of symmetry;b-) The crystalline system to which this crystal would belong;c-) Determine the Weiss Parameters and the respective Miller indices for eachface of that crystal. Note that a crystal of this type has 7 faces.d-) Make a stereographic projection of this crystal indicating:- the position of all 07 faces;- the position of all crystallographic axes;- the position of all crystallographic planes.Show inetmediates and electron flowMesityl oxide show two band at 230 and 327 but its isomer does not show any band.
- Using periodic trends, crystal structures, valence states, etc., explain the complex spectrum of electronic properties of transition metal compounds (e.g. from TiO to NiO), and describe the main factors that affect the electronic properties, or favour electronic conduction, of inorganic materials. As a specific case of the above question, predict and account for the differences in electronic properties between (a) TiO2 and TiS2, and (b) TiO2 and VO2.Is the Hammett Function (Surface Acidity) for minerals temperature dependant? If a Hammett function test for alumina or metallic oxide shows one result and then calcined at elevated temperatures how does this change the Hammett Function by removing moisture and or is this a change in crystal structure. Temperature from 300C, 400, 500C well below the melting point of the mineral. Lastly what minerals responds the most to calcining the mineral i.e. silicon based, aluminum based, zinc based, talc, mica, kaolin, titanium dioxide, calcium oxide and carbonate ,iron oxides and others? Does Hammett function also apply to surface basicity?Phosphotungstic acid is one of a number of heteropolyacids. Name additional elements you can bind into heteropolyacids. Why are certain heteropolyacids so important for gravimetric determination of the heteroelement? Briefly describe, draw and discuss at least three of their structures.