A student attempts to determine the molecular weight of an unknown liquid with a boiling point of 79.6°C, using the method of lowering the boiling point. naphthalene freeze. Explain why you were unable to determine its molecular weigh

Q: 1-butanol yields 1-bromobutane in the presence of concentrated sulfuric acid and an excess of sodium…

A: We have to predict the percentage yield.

Q: Chemistry Propose a synthesis of the target molecule from the starting material(s) provided. Please…

A: Step 1 : Hydrogenation. Step 2 : PCC oxidation Step 3 : acetylide anion addition to keto. Step 4 :…

Q: A solution contains a mixture of Na2CO3 and NaOH. Using phenolphthalein indicator 25 ml of mixture…

A:

Q: Considering the reaction: N2O4 (g)  ⇔ 2 NO2 (g)     ΔH = negative   Which of the following will…

A: Given following equilibrium reaction -  N2O4 (g)  ⇔ 2 NO2 (g)     ΔH = negative    It is an…

Q: Based on the graph, what is the estimated number of theoretical plates of the fractional…

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Q: The chemicals A and B react as follows to produce C and D:                               A  +  B  ↔…

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Q: Supply the missing products in the following reactions, as indicated by CAPITAL letters inside the…

A: Given diagram of reactions is : Complete the diagram by making all the major products = ?

Q: 0.25M HCl (500 mL) will be prepared from 37.2%(w/w) with density 1.19 g/mL

A: Density of intial Hcl solution = 1.19 g/mL Concentration of intial HCl sol. = 37.2% Final conc. Of…

Q: On the illustration of a generic cell for In/Zn electrodes immersed in their salt solutions Write…

A: Here we are required to find half cell reaction for the redox reaction which occur in the…

Q: In a 400 ml solution with added 5 g activated carbon, the XRF detected 55 mg/L of gold. • Determine…

A: Volume of solution =400 mL Mass of activated C =5 g Concentration of gold =55 mg/L

Q: On the illustration of a generic cell for In/Zn electrodes immersed in their salt solutions Use the…

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Q: Draw the organic product/s formed in each reaction. Then, identify the mechanism for each reaction…

A: A. t-butoxide is a bulky base favors elimination and sn2 product is minor. B. Primary alkyl halide…

Q: How many Calories (nutritional Calories) does 16.4670 pounds of fat have? Show dimensional analysis,…

A: 1 pound of fat =  3500 calories

Q: Liquid mercury has a density of 13.69 g cm-3, and solid mercury has a density of 14.690 g cm-3 both…

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Q: 1.Calculate the molarity of a solution made by dissolving 15g NaOH in water and diluting to 1.00…

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Q: Which of the following phase diagrams corresponds to a system wherein boiling occurs before the two…

A: The phase diagram corresponds to a system where boiling occurs before the two liquids are Fully…

Q: On a separate sheet of paper, show the setup and answer for each problem. Follow problem-solving…

A: At standard temperature and pressure, gases occupies volume of 22.4L per mole.

Q: Make 50 ml of the extraction buffer containing the following ingredients using the stock solution…

A: We need to make 50 mL of the extraction buffer.

Q: c. What is the initial rate of formation ofC if the initial concentration of A is 3.0 x 10 2. The…

A: The rate equation for the reaction can be written as: Rate=kAxBy......(1) Here, x is the order with…

Q: ll. Direction: Carefully read the following problems. Do the following : D. Determine the percentage…

A: It is an example of stoichiometric reaction  Here we are required to find the percentage yield and…

Q: What is the AHfus of ethanol (46.06 g/mol) which has Kp of 1.99 and freezes at -117.3 °C? 4.68…

A: Given: Molar mass of ethanol = 46.06 g/mol Freezing point = -117.3oC Kf of ethanol = 1.99 K kg mol-1

Q: Consider a solution consisting of 1.75 mol water and 0.97 mol ethanol. What is the entropy of…

A: Answer:- 14.7 J/k

Q: The osmotic pressure of an aqueous solution at 309 K is 120 kPa. Calculate the freezing point of the…

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Q: estion 24 19.04 g of an unknown compound decreased the freezing point of 421 g of benzene (Kf= 5.12…

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Q: 1a.In which of the following substances does nitrogen exhibit the lowest oxidation number? A. NaNO2…

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Q: What volume of carbon dioxide gas at 0.980 atm and 293 K could be made from reacting 10.0 grams of…

A: Answer: Limiting reagent is the reactant that exhaust first in the reaction and decides the yield of…

Q: The isomerization of cyclopropane to form propene is a first-order reaction. H,C-CH; H;C-CH=CH; CH:…

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Q: The reaction between iron and thiocyanate ions involves this equation: Fe3+ (aq) + SCN" (aq) =…

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Q: e e Inert Inert Electrode Na(l) Electrode Cl2(9) Molten NaCI CI- Na+ Anode Cathode

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Q: 13.72 A metallurgist wants to gold-plate a thin sheet with the following dimensions: 1.5 in x 8.5 in…

A: We have find out the answer.

Q: Using net ionic equations and solution stoichiometry, calculate the molarity of the principal…

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Q: 50.00 mL of a buffer solution contains 0.280 M HClO and 0.450 M NaClO.  If 25.00 mL of water is…

A: Given-> Volume of buffer = 50.00 ml Molarity of HClO = 0.280 M Molarity of NaClO = 0.450 M Volume…

Q: 1. (a) Determine the valence electron counts on the transition metals. Find out the formal oxidation…

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Q: Which of the following is the phase diagram of water-nicotine system? TIK 210 Composition phase P.2…

A: The phase diagram of the water nicotine system is

Q: List the number of protons, neutrons, and nucleons (protons + neutrons), in that order, for an…

A: Given:

Q: Name the following molecuie. Use correct hyphens, include best placement of numbers and don't…

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Q: For the reaction PCglu) • Clzlo) true based on the above? PCIsla) at a particular temperature, Ke -…

A: In chemical thermodynamics, the reaction quotient (QC) is defined as the measurement of the relative…

Q: In which phase boundary is the equation, p = P* + - In applicable AV. T* O Solid-liquid boundary O…

A: The classius clapeyron equation is: dPdT = ∆HT∆V We have given the integrated form of the classius…

Q: In an experiment, hydrochloric acid reacted with different volumes of sodium thiosulfate in water A…

A: The reaction between HCl and sodium thiosulfate produces a yellow colored precipitate of sulfur.

Q: For the reaction N2(g) + 3 H2(g) 2 NH3(g) Kc= 0.0600 at a certain temperature. In an equilibrium…

A: • The given reaction is,          N2 + 3H2 ⇌ 2NH3(g)  • The values provided in the question are:-…

Q: what is the primary solute and solvent of duralumin?

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Q: :Br:

A: Stability of carbocation increases as we move from primary to tertiary carbocation.  Tertiary…

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Q: NO2 N. CH3 CH3 CH3 H3C

A: 13 C NMR spectroscopy is the application of NMR spectroscopy to carbon . 1H NMR spectroscopy is the…

Q: give 5 examples of a 1 phase diagram and show its phase rule

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Q: Show how you would accomplish the following with good yield: NH2 NHO a) b) Ph-COOH Ph-ċ-o-ċ-CH3 H…

A: a. N-formylation.   b. acid FG to anyhydride FG using P2O5. c. Fischer esterification.   d.…

Q: Which is a contributing resonance structure of: b) c)

A: Given structure is :  What is the resonance contributing structure of the given structure = ?…

Q: Which of the following refers to a composition in which its components cannot be separated by…

A: Distillation :- It is a method of separation of mixture of liquids based on their difference in…

Q: 16 Hz 16 Hz CDC13 -1.758 -1.718 29 19 L- 7.612 109 L 6IB L 1.414 1.411 A09 60 L- -1.250 -1.102…

A: The correct interpretation of 1H NMR spectrum is given below.

Q: In a two-vessel technique titration set-up, what is the unknown substance if the volume of…

A: Indicator is an important factor for wnd point determination. On the Basis of different…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.