Rubies are essentially alumina (Al2O3) with a contaminant of chromium in the form of Cr2O3. A lab-made ruby weighing 1.994g is ground, digested in hot nitric acid, and the chromium prcipitated as Cr(OH)3(s). If the mass of the Cr(OH)3 is 0.0135 g, compute the percentage of chromium in the ruby. Also compute the percentage of Cr2O3 in the ruby.

Q: Draw the major product of this SN1 reaction. Ignore any inorganic byproducts. I H₂O Br a

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Q: Which statement is true regarding [Fe(en)3]²+? The coordination complex has an optical isomer. O The…

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Q: b) Give IUPAC name for the following structure CI OH x

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Q: A reaction of 58.3 g of Na and 56.5 g of Br, yields 58.3 g of NaBr. What is the percent yield? 2…

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Q: Consider the following two reactions. reaction 1: A+B⇒C+D_AG = -24.3 kJ/mol reaction 2: W+X→→Y+Z AG…

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Q: h. o q CI CI CI

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Q: b) hv PhạC=O hv [direct irradiation]

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Q: Which of the following gas samples would have the largest volume, if all samples are at the same…

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Q: a Find all of the carbon stereocenters in a cholesterol molecul ① 2 HO 5 6 7 8 9 H3C 6 10 11 Show…

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Q: Calculate the heat required to convert 1.50 g of ice at -5.75°C into liquid at 25.8°C given…

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Q: H₂C -CONa

A: Given that, the structure of the carboxylate salt is:

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Q: What happens to the 5 degenerate d orbitals when the nickel(II) cation forms the complex…

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Q: A skeletal structure for sulfate (SO42) is shown below. Starting from this structure, complete the…

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Q: Using the drawing space below, draw the mirror image of the following molecule: CI H" Br HO Once you…

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Q: How many positive signals do you expect to see on the DEPT-135 13C NMR spectrum of the compound…

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Q: Which of the following is the ground state term for a low spin d5 octahedral complex? A.2I B.2D…

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Q: Consider the quilibrium reaction between X and Y, as shown below: X=Y AG The reaction is started…

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Q: Which of the following would indicate that an enzyme is approaching "catalytic perfection"? Kcat >…

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Q: Which of the following liquid substances has the highest vapor pressure at its normal boiling point?…

A: Information of question

Q: Draw an alkyl halide that would undergo an SN2 reaction to yield this product under the conditions…

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Q: 4. For each of the following molecules: H₂C H₂C Me a) Label each chiral atom with its R or S…

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Q: Please don't provide handwritten solution

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Q: A chemist adds 350.0mL of a 1.96M iron(II) bromide FeBr2 solution to a reaction flask. Calculate the…

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Q: 6. Propose a synthesis for the following product from the starting material(s) indicated. Show all…

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Q: please show thr conformation and the products formed

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A: Information of question

Q: Can you use the DEPT-90 ¹3C program to distinguish between the two compounds below? O No O Yes

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".