A small intermittent fraction is collected and discarded. This is a good practice because     intermittent fractions contain unknown substances   intermittent fractions contain substances synthesized during distillation   intermittent fractions are composed of both unseparated components of the mixture   intermittent fractions are toxic   intermittent fractions decompose quickly over time

Q: What ion is reduced when a precipitate which may contain Barium Chromate is added with HCl and…

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Q: (a) Que the albuciones of missing heats raks (ख) and products & thandl Pentanal Acetic acid Salicy…

A: Here we are required to draw the structure of the ester formed.

Q: The following reaction is performed and the experimental kinetic data are presented in the table…

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Q: 6. Calculate the number of moles of BaCrO, that must dissolve to produce 1 L of a saturated.…

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: Draw structural formulas for an aldehyde or ketone and alkyl (or aryl) bromide that could be used in…

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Q: Calculate the hydrogen ion concentration of a Nitric acid solution with a pH of 2.11.

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Q: Initial volume of buret (mL) Mass of KHP (g) Observations Final volume of buret (mL) Volume of NaOH…

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Q: 4.21 Ethylene has D2h symmetry. a. List all the symmetry operations of ethylene. b. Write a…

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Q: Styrene, the building block of polystyrene, consists of only C and H. If 0.628 g of styrene is…

A: The empirical formula of a compound represents the atoms with the lowest possible atomic ratio in…

Q: Suppose you have 100.00 mL of a solution of a dye and transfer 2.00 mL of the solution to a 100.00…

A: A 2 step dilution is carried out with the original dye solution.

Q: A fractional, or column distillation is a versatile method for separation of chemicals…

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Q: For the following reaction, 6.80 grams of water are mixed with excess chlorine gas. The reaction…

A: We have to calculate the theoretical yield and percentage yield of hydrochloric acid.

Q: Check whether the wavefunction =sin(34x) is an eigenfunction of the operator then find the…

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Q: 20) What is the major product from the following reaction? + H H 2 eq COOH COOH + 1 eq heat heat…

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Q: A cat has volume 0.08 m³ and density 670 kg/m³. Find the mass of the cat ?

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Q: Provide the curved arrow formalism of the compound shown below treated wtih Br2 in EtOH. Include…

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Q: ▶ Part A Part B Interactive 3D display mode CH3 CH3 H₂C 2-methyl butane C Submit C Spell out the…

A: For IUPAC naming following steps are required -> First of all identify the longest carbon chain.…

Q: •want top Procedure: Caution: do not change the order of addition given here. x15 Using a graduated…

A: SN1:  SN1stands for substitution nucleophilic unimolecular. SN1 reactions occurs by formation of…

Q: Calculate the number of moles of water from the mass of water loss: Molar mass of water= 18.0153…

A: Molar mass of water= 18.0153 g/mol Mass of water lost

Q: What is the empirical formula of the following compound given the following data? The sample…

A: Given: The mass of nitrogen in the compound = 0.130 g The mass of oxygen in the compound = 0.370 g…

Q: Give the acid, base and classification of the ff: a.) NH4Cl b.) KCl c.) Ba(CN)2    pls help me…

A: Check whether the given compounds are acid, base or anything else and write particular thing in…

Q: A herbicide contains 2,4-D (2,4-dichlorophenoxyacetic acid), C8 H6 Cl2 O3. A 1.265-g sample of the…

A: A question based on mole concept that is to be accomplished.

Q: OH Determine the type of alcohol the molecule shown here. A) primary B) secondary C) tertiary D)…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: Nitrates are natural chemicals that are found in the soil, air, and water. Nitrates are also used as…

A: Given,  The mass of M(NO2)2 = 61 g.  The atomic mass of N = 14.01 g/mol…

Q: Determine the pH change when 0.063 mol KOH is adde to 1.00 L of a buffer solution that is 0.310 M in…

A: We have to calculate the change in pH

Q: 애 H ₂ SO 4

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Q: 1. For each of the solutions in part 3, calculate an expected pH. The Ka for HC₂H3O2 is: 1.8 x 10⁹…

A: #1: Given Ka of HC2H3O2 = 1.8*10-5  Ka of NH3 = 1.76*10-5

Q: Why does bromination reactions occur only on more stable radicals? O a. Br₂ is less reactive than…

A: We know bromine is more reactive than chlorine can be explained by hammond's postulate.According to…

Q: What is the theoretical yield and limiting reagent for the reaction of benzophenone with sodium…

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Q: Which chosce best explains why the molecules below can be distinguished by IR Molecule A Molecule A…

A: The IR spectroscopy is used to determine the presence of different functional groups based on their…

Q: Provide the curved arrow formalins for tbe reaction of (R)-3-chloro-2-methyl-1-propanol treated with…

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Q: Calculate the root-mean-square (rms) speed (in m/s) of propane (C3H8) gas molecules at a temperature…

A: We have to calculate the root-mean-square (rms) speed (in m/s) of propane (C3H8) gas molecules

Q: The Tris stock solution concentration is 2M. How much of it we should take to prepare 150 ml 4.844…

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Q: The ionic radii of the Mg21 and O22 ions are 0.86 Å and 1.26 Å, respectively. Given that the…

A: Given, Chemical compound = MgO

Q: Determine the equilibrium constant for a reaction at 260.0 K if ∆G° =21.20 kJ/mol. (R = 8.314 J/mol…

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Q: A supplement was tested for iron content in a laboratory. First, a random sample of 10 tablets…

A: #(a): Given the mass of the iron tablet taken to obtain Fe2O3(s) = 2.7544 g  Mass of pure and dry…

Q: Classify the following molecule: H3C-C-CH₂CH3 acid aldehyde amine ketone carbonyl

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Q: Identify the acid, base and conjugate acid(CA) and conjugate bases (CB) of the reaction   a.) HCO3-…

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Q: Determine the correct IUPAC name for the compound shown here.

A: IUPAC rules to assign  names to the organic compounds Choose the longest chain as parent chain ,…

Q: J 5

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Q: If we have 9 Calcium, 9 Chlorine, 10 Magnesium and 3 Lithium ions in a box, what will be the value…

A: 9 Calcium weight= 9 x atomic mass of Ca                                 = 9 x 40…

Q: The specific rotation for (-)-methylphenidate is -38° mL g¹ dm1. Path length of the polarimeter is 1…

A: Given ,  The specific rotation of  (−)-methylphenidate -38°mLg dm Path length of polarimeter  = 1 dm

Q: <hase # но

A: This reaction is an example of dehydration of alcohol. It undergo via a carbocation intermediate…

Q: Four resonance structures contribute to the actual structure of an arenium ion, of which one…

A: the resonance structure of remaining  form are shown as follow.

Q: Find ∆Stotal (entropy change) when 100 grams of water vapor initially at 200 degrees Celsius…

A: ∆Stotal (entropy change) when 100 grams of water vapor initially at 200 degrees Celsius undergoes a…

Q: Which Nitrogen containing compound is the most basic? N H (B) N NH4 G

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Q: What volume of 0.210 M HNO3, in milliliters, is required to react completely with 4.25 g of Ba(OH)2…

A: To find the volume of HNO3 needed, • Convert given mass of Ba(OH)2 to moles. • From the balanced…

Q: The pH scale is a logarithmic scale. The pH of an orange juice is 5.2. A glass of milk has a pH of…

A: We have to predict how much time orange juice is more acidic than glass of milk.

Q: How much of copper sulphate pentahydrate we need to prepare 0,5L 0,1 M solution?

A: Given, Molarity of the solution = 0.1 M = 0.1 mol/L Volume of the solution = 0.5 L mass (in grams)…

Q: The ionic radii of the Mg21 and 022 ions are 0.86 Å and 1.26 Å, respectively. Given that the…

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