A. PHYSICAL PROPERTIES OF ELEMENTS AND COMPOUNDS Using the information obtained during the experiment, please complete the following table. Substance Carbon Oxygen Carbon dioxide Lead lodine Lead(II) iodide Iron Sulfur Iron(II) sulfide Zinc Selenium Zinc selenide Symbol/ Element or Formula Compound C element O elements CO² compound сог Pb I elements Fe S 2n Se Zn Compounds Physical State solid Color black Luster dull

Q: Consider the following formula, which of the following BEST identifies them: (a) CH₂O (b) CH3NO (c)…

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Q: d) For the product of this equation, write a chemical equation describing its decomposition. ell…

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Q: 2) Consider the following reaction and the data below: 2NO +2H₂ → N₂ + 2H₂O [H₂], M 0.100 0.185…

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Q: 30.0 mL of 0.50 M ethylamine (Kb = 5.6 x 10-4) is titrated with 0.75 M HCI. 4.99 7.00 4.56 5.91 6.23…

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Q: Select all of the true statements about melting points. a. The melting point range of a pure…

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Q: Which of the two molecule represents the following ¹H-NMR spectrum? g 3H O The one on the right The…

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Q: Consider solutions of Cr(NO3)3-9H₂O in water. The solubility of Cr(NO3)3-9H2O in water at 15 °C is…

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Q: The decomposition reaction M H rightwards arrow M to the power of plus plus H to the power of minus…

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Q: Penicillin is hydrolyzed and thereby rendered inactive by penicillinase, an enzyme present in some…

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Q: What is the name of the molecule shown in the below image?

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Q: can you help me what is the polar bond, nonpolar bond, covalent bond, polar molecule, and non-polar…

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Q: What is the average kinetic energy (in kJ mol-¹) of a hypothetical gas with molecular weight 52.6 g…

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Q: A gas occupies 2.22 L at 367 K. What is the volume at 696 K? 4.21 L 1.17 L 0.289 L 4.20 L 3.21 L

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Q: Provide solutions for the following problem. Express- your final answer as indicated otherwise show…

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Q: Choose the resonance structure that results from the arrow pushing scheme below: H سفی مشهد مع 00 O-…

A: We have to determine the resonance structure of the given molecule

Q: 1. If I want to make a buffered solution at pH 7.4, which of the following acids would be the best…

A: For the buffer solution, Henderson equation is pH = pKa + log [salt][acid]

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Q: Coffee is an acidic beverage with a typical pH = 4.85, while milk has a pH = 6.80. Assuming no…

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Q: Which statement best describes the structure that results from the following curved arrows: | ?

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A:

Q: What is the IUPAC name of the following compound? Multiple Choice

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Q: Grams of Solute (g) F 8 60 A 12 50 10 20 30 40 50 70 80 Temperature (c²) 90 100

A: The given graph shows the patterns of solubility amount of various solute (i.e. salts, gases) with…

Q: See Figure 3-1. Match the letter to the correct functional group. A B D ✓ [Choose ] alkene aromatic…

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Q: When solid ammonium chloride is added to water, all of the solid dissolves and the solution becomes…

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Q: Which of the two products will be the main product?. Se&. v 1 mmol + 1 mmol 1 mmo Br OH

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Q: 21 Which statement is correct concerning the relative stabilities of the two conformations, A and B,…

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Q: A 21 L reaction vessel contains only He gas. The system is kept at 55 °C and the pressure inside the…

A: Given : volume = 21 L, temperature= 55°C      Pressure= 0.495 atm  Tip : PV = nRT

Q: 4)√ for the units) for the reaction 2A + 2B + 2C products. Show all work (shortcuts are allowed, but…

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Q: molar mass of solute B is 101.103 g mol−1   A 100.5 g sample of solute B dissolved in 100 g of…

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Q: 2. 100 mL of a barium hydroxide solution is titrated with 0.2 M HCI. If it takes 178 mL of HCI to…

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Q: If a buffer solution is 0.210 M in a weak acid (K₁ = 3.0 x 10-5) and 0.480 M in its conjugate base,…

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Q: In a calorimeter, a 1.0 g sample of magnesium is burned to form MgO. In doing so, 25.5 kJ of energy…

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Q: For the equilibrium system below, which of the following would result in an increase in the quantity…

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Q: Assuming you’re a laboratory analyst, how will you know the accurate concentrations or the solutions…

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Q: If a solute is polar, then the solvent that theoretically should work for recrystallization should…

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Q: Calculate the initial [S₂O32] on the paper ([S₂O3²-]o), assuming the amount of S₂O3²- you added…

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Q: Thalidomide exists in two enantiomeric isomers as shown below. ((R) N۰۰۰ ((S) If a solution is…

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Q: Using the information in the table, the value of the rate constant for the reaction A(g) + 3 B(g) →…

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.