Ethane gas is held in a constant volume container at a pressure of 225 kPa, and the temperature decreases from 125 °C to 21.0 °C. What is the new pressure?

Q: What would the overall charge of this peptide sequence (Asp-Ala-Phe-Lys-His) at pH 12 be?

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Q: The (R, R) isomer of methylphenidate (Ritalin) is a treatment for attention deficit hyperactivity…

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Q: Balance the following REDOX reaction on a piece of paper and show ALL EIGHT steps. Pj2O3 + TsO3- →…

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Q: 3. Give the name of this compound, including stereochemistry if relevant: H CI HCECCH₂-C-CH₂CH₂Br

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Q: Which formula represents an unsaturated hydrocarbon? a. C5H12 b. C6H14 c. C7H16 d. C8H14

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Q: 16. 17. 18.

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Q: Draw the Lewis structure of acetone, (CH3)2CO(CH3)2CO.

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Q: . Name the following organic compounds: (6) (7) (8) (9) (10) CL x

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Q: skip if you already did this otherwise downvote

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Q: Unknown 3 ¹H NMR data (ppm) multiplicity integration 0.86 t 3 1.50 2 2.02 2 6.71 1 7.24 1 sextet t S

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Q: 10. Rank the following protons in the order of increasing pka. HB Me O A HB <HA <HD <Hc B HD <Hc<HB…

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Q: Isotope #3 • Element Symbol Ag • Nuclear Symbol Ag 81 35 • Atomic Number 35 • Mass Number 81 •…

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Q: H₂N HC OH CH3 CH3 CH3

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Q: Show the mechanism for the Diels-Alder reaction that you will perform during today's experiment. OH…

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Q: Which of these molecules have chiral center?

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Q: Questions 3 and 4 below refer to the image above. A. B. H₂C CH₂ C. H 1 H-C-H H H-C-H H-C-H H-CH…

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Q: find absolute and relative standard deviation of this data.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.