How many moles of pentane, C5H12, are in an 18-g sample? Question 8 options:     [A] 0.20       [B] 0.25       [C] 0.50       [D] 0.75       [E] 0.80

Q: A chemist adds 55.0 mL of a 1.27M sodium thiosulfate (Na₂S₂O3) solution to a reaction flask.…

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Q: Consider the following samples of gas. Select the set of graphs below that show the distributions of…

A: The molecular speed of any gas depends on temperature and molar mass of the gas.The molecular speed…

Q: Predict the major products of this organic reaction: od HBr (1 equiv) A ? Some important notes: •…

A: The given reaction is an electrophilic addition reaction of halo acid to a conjugated…

Q: Calculate the molarity of a 2.0 ppm aqueous Mg2+ solution. 8.2 × 10 5 M 8.2 × 10-2 M O 1.2 × 10-2 M…

A: Note: 1 ppm = 1 mg/LConcentration of aqueous Mg2+ solution = 2.0 ppm = 2.0 mg/LMolarity of aqueous…

Q: Draw the major product of this reaction. Ignore inorganic byproducts. o 1. CH3CH2CCNa 2. H3O+…

A: Acetylide anions will add to aldehydes and ketones to form alkoxides, which on protonation with acid…

Q: How many electrons is this molecule able to transfer during the course of a reaction? 1 4 H₂C. H3C…

A: In the given question we have to identify how many electrons will be transferred in the given…

Q: The rate constant for a certain reaction is k = 3.20x10-3 s concentration be after 20.0 minutes?…

A: Q. Given(rate of constant of certain reaction) (initial reactant concentration at t =0 s)t= 20…

Q: Determine the major product(s) of the following reaction. CH3 acetophenone [1] (S)-CBS reagent [2]…

A: Corey–Bakshi–Shibata (CBS) reduction, reduces a ketone to an enantioselective alcohol.

Q: A compound known to contain only carbon, hydrogen and oxygen gives 52.1% C and 13.1% H upon…

A: First, we have to find the empirical formula of the compound using the microanalysis report. Then…

Q: A sodium vapor street lamp emits yellow light at wavelength λ = 589 nm. How much energy is released…

A: The objective of this question is to calculate the energy released per mole of sodium atoms when a…

Q: In the laboratory you are asked to make a 0.243 m nickel(II) bromide solution using 275 grams of…

A: We know that Molality is defined as moles of solute per kg of solvent. Molality =

Q: 4. Write the name for the following compounds a) Your answer F Nour al a fiat CH₂ CH₂ ОН CH 3 1…

A: To name an organic compound we must know nomenclature rules.

Q: IDENTIFY IF ENANTIOMERS, DIASTEREOMERS OR EPIMERS

A: Two compounds are given and we have to find if they are enantiomers, diasteriomers or epimers.

Q: SO₂ reacts with Cl₂ to form SO₂Cl₂. The equilibrium constant, Kp, for this reaction is 0.417 at 373…

A: When equilibrium is disturbed, the reaction tends to reestablish the equilibrium by moving in a…

Q: What is the expected freezing point of a 0.50 m solution of Cs2CO3 in water? Kf for water is…

A: Molality of the solution = 0.50 mKf for water = 1.86°C/mFreezing point of solution (Tf(solution)) =…

Q: Which of the following would be classified as an electrophile? ►View Available Hint(s) O & B. CH CH,…

A: An electrophile is a chemical species that is electron-deficient and has an affinity for electrons.…

Q: An aqueous solution has a normal boiling point of 103.5°C. What is the freezing point of this…

A: Given:Boiling point of solution = 103.5 oCKb of water = 0.51 oC/mKf of water = 1.86 oC/mWe have to…

Q: What volume of a 36.0 wt% HC1 (FM 36.458) solution must be diluted to prepare 1.000 L of a 0.100 0 M…

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Q: HH n A molecule of polyethylene has n=1000. What is the molar mass of this molecule? The atomic…

A: To calculate the molar mass of a polymer chain, one must multiply the mass of each repeating unit by…

Q: lodoacetamides, maleimides, benzyl halides, and bromomethyl ketones can all be used to modify the…

A: Iodoacetamides,maleimides , benzyl halides and bromomethyl ketones. All the above chemicals are…

Q: ri ?!? i CI

A: We have to synthesize alkyl halide from given ketone.Thus can be done by first reducing the ketone…

Q: Hydrogen peroxide comes from the manufacturer at a concentration of 30% (w/v). Describe how you…

A: Given data:The molar mass of is .The 30% (w/v) solution has a density of approximately 1.11…

Q: For a particular reaction at 298 К., Кр 3.445 x 10^-3. When the same reaction is re-run at a lower…

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Q: Calculate Kp for the following reactions at the indicated temperature. (a) PC13(g) + Cl₂(g)=PCI5(g)…

A: Where R = universal gas constant            T = absolute temperature            ∆n = number of…

Q: 7.5 7.24 7.25 7.27 7.29 -7.21 0.60 U 7.0 Unknown B-C7H8O 6.5 6.0 5.5 5.0 4.48 0.25 4.5 4.0 3.46 0.13…

A: Given question is related to drawing the structure of unknown compound B , by analysing the given…

Q: Which of the following structures is not a resonance contributor to the hybrid defined by the other…

A: Organic compounds can be defined as compounds that contain carbon and hydrogen atoms. We have been…

Q: CI &..C + En Br HO

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Q: 10. Determine the formal charge on every atom in the following molecule :0: :00:

A: From given question there is need to determine formal charge on sulphur and oxygen in SO3

Q: 7. MATCH a structure from the list below to the following IR spectra. Place the structure in the…

A: A question based on IR spectroscopy. The given organic structures are to be matched with the most…

Q: CH3CH₂ CH₂CH3 CH3 CH₂CH₂CH3 CH3 CHCH3 CH3

A: McLafferty rearrangement of monounsaturated molecular ion or radical ion with the cleavage of α,…

Q: A zero-order reaction has a constant rate of 4.20x10-4 M/s. If after 80.0 seconds the concentration…

A: Integrated rate equation for a zero order reaction is,[A]t  = [A]0 - kt[A]0  - Initial concentration…

Q: A baker uses sodium hydrogen carbonate (baking soda) as the leavening agent in a banana-nut quick…

A: Answer:-This question is answered by using the simple concept of stoichiometry which involves the…

Q: After 0.600 L of Ar at 1.19 atm and 240.0 °C is mixed with 0.200 L of O₂ at 428. torr and 110.0 °C…

A: Argon volume = 0.600 Lpressure = 1.19 atmtemperature = 240.00C (513.15 K)Oxygen volume = 0.200…

Q: 3. Draw the major product for the following reaction. HBr R-O-O-R

A: unsymmetrical alkene when the addition of halogen acid (HX) takes place, then the negative part of…

Q: The compound below is treated with N-bromosuccinimide (NBS) in the presence of light. Draw both…

A: The reaction of alkene with N-bromosuccinamide(NBS) is a type of radical halogenation reaction,…

Q: Calculate the mass of NaCH3CO2 contained in 500.0 mL of a 0.150 0 M NaCH3CO2 solution. (NaCH3CO₂ =…

A: Volume=500.0 mLmolarity=0.150Mmass of NaCH3CO2=molar mass of NaCH3CO2=82.0343g/mol

Q: d) Fe 15. Which of these is not a polyatomic molecule? A) HCI b) C6H12O6 c) NH3 d) CH4 Part 4 lons…

A: The objective of the question is to identify the molecule that is not polyatomic among the given…

Q: The concentration of dissolved argon in water exposed to gaseous argon at a partial pressure of…

A: Concentration of argon(C1) = 1.510-3 mol/LPressure(P1) = 101.3 kPaPressure(P2) = 50.3…

Q: PROBLEM 9 Draw a mechanism for the following reaction. (This is harder, but if you draw out the…

A: A question based on reaction mechanisms. A complete curved arrow mechanism is to be depicted for the…

Q: speed speed speed MM LA speed speed [] W speed

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Q: draw the bond line drawing of CH3CH2CH2CH2CO2H

A: bond line structural formula is another way of structural representation of organic compounds. Here,…

Q: Which H is most acidic? Highlight this H. H H P - H

A: Given compound is organic compound.The more acidic H is one which leads to formation of more stable…

Q: Using the bond energies provided below, calculate the enthalpy change (AHrxn) the reaction shown.…

A: From given question there is need to determine change in enthalpy of the given reaction.

Q: In the reaction of silver (I) nitrate and calcium iodide, which forms silver (1) iodide and calcium…

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Q: Choose the aqueous solution with the highest freezing point. These are all solutions of nonvolatile…

A: The colligative properties of solvents shows that the freezing point of water is lowered when solute…

Q: The planet Mars orbits 2.279 x 10¹¹ m from the Sun. Express the distance using the appropriate…

A: 1m = 10-3 mm1 km = 1000 m1 nm = 10-9 m1 Gm = 109 m

Q: 4. Draw the Lewis dot diagrams for the following molecules. If applicable, include formal charges…

A: We have been asked to draw Lewis structures of different molecule and we also have to show the…

Q: flask is charged with 0.100 mol of A and allowed to react to form B according to the following…

A: The objective of the question is to calculate the number of moles of B at each time in the table and…

Q: Draw a resonance structure that shifts a lone pair from the oxygen to form a new pi bond. Include…

A: Resonance effect is an electronic effect where electron is delocalized to give more stability to a…

Q: 26. Determine the major product(s) of the following reaction: Br₂ ? H₂O A) B) C) D) OH Br TBr OH Br…

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