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± Calorimetry Part A A calorimeter contains 22.0mL of water at 14.5∘C . When 1.80g of X (a substance with a molar mass of 59.0g/mol ) is added, it dissolves via the reaction X(s)+H2O(l)→X(aq) and the temperature of the solution increases to 26.0∘C . Calculate the enthalpy change, ΔH, for this reaction per mole of […]

chemistry liquid The liquid in the open-tube manometer in Figure 12.8a in the textbook is mercury, y1 = 3.00cm, and y2 = 7.00cm. Atmospheric pressure is 980 millibars. What is the absolute pressure at the bottom of the U-shaped tube? What is the absolute pressure in the open tube at a depth of 4.00 cm […]

Unit VII Case Study Read the incident scenario write a response that is at least three pages in length. Your response must include answers to the questions being asked. All sources used, including the textbook, must be referenced. Paraphrased and/or quoted materials must have accompanying in-text and reference citations in APA format. Scenario: You are […]

material balance A purification system with recycle is used to recover the solvent DMF from a waste gas containing 55% DMF in air. The product is to have only 10% DMF. Using the information in the figure below, calculate the recycle fraction assuming that the purification unit can remove two thirds of the DMF in […]

Creation of a Phosphate Buffer You wish to prepare 125 milliliters of 0.0500 M phosphate buffer, pH 7.90, from phosphoric acid [a liquid; specific gravity = 1.69, assay by weight = 85.6%; MW = 97.999] and potassium hydroxide [a solid; purity 86%; MW = 56.11]. Use pKa (not pKa’) from Table 2-1 in the coursepack. […]

Molecular Model Calculate the volume of one mole of aluminum atoms, Va, in the liquid element. Element: Al Atomic mass:26.98 Atomic Radius:1.431×10^-8 Density 2.39 Is this the question you were looking for? If so, place your order here to get started!

I need help with chem 4 hw problem The reaction 2A + B –> C + D has an activation energy of 80.0 kJ/mol. At 320°C, the rate constant k = 1.80 x 10-2 L mol-1 s-1. What would be the value of k at 450°C? I know what the answer is but I’m not […]

diene +dienophile Deconstruct the following Diels-Alder adduct. Show what reactants, in any order, would be needed to produce the following: Attachments Doc15.docx Is this the question you were looking for? If so, place your order here to get started!

Consider σ−bonding in the trigonal bipyramidal complex [CuCl5]3-. (a) What is the point group of the complex? (b) To what irreducible representations do the metal d-orbitals belong? (c) Find a reducible representation for the ligand SALCs. (d) What irreducible representations compose the reducible representation you found in (c)? (e) Draw an MO diagram describing the […]

Jellyfish – Impact of bilingualism and the role of culture in learning. Conduct an Internet search for 2 articles that discuss the impact of bilingualism and the role of culture in learning. In a 1000-1200 word paper, discuss the challenges that language minority students face in schools today as well as ways that all teachers […]