15 g of unknown organic sample was dissolve in 575 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 3.40oC. Determine the molecular weight of the unknown sample?  Kb of DCM = 2.42oC/m Bb of benzene = 39.6 oC density of benzene = 1.33  g/mL at 25 °C

Q: 2. For each of the following, describe the relationship as directly or inversely proportional: a)…

A: * Wavelength is define as the distance  between two adjacent crest or trough.  * Frequency is the…

Q: 218- E B 0.006- A 0.01 100 374 Temperature (°C) vap(atm)

A:

Q: (iv) [(n²-C3H;)(n°-C3H3)M(CO)]"

A:

Q: A first-order reaction is 40.0% complete at the end of 39.1 minutes. What is the value of the rate…

A: Given reaction is 40% completed hence remaining concentration is 60%

Q: How is pH and pOH calculated?

A: pH describes the potential of H+ in a solution. pH is calculated using the following equation…

Q: Which of the following was used in excess in the gravimetric method of analysis experiment? BaCl,…

A: The correct answer about gravimetric analysis is given below

Q: 5. Consider the following sets of replicate measurements: *A в *C D "E F 0.514 0.503 0.486 2.7 70.24…

A:

Q: Which of the following 0.05 M aqueous solutions will have the highest boiling point?     Potassium…

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Q: A student attempts to determine the molecular weight of an unknown liquid with a boiling point of…

A: Given that -  Boiling point of unknown liquid = 79.6°C  While lowering the vapour pressure,…

Q: A 250. mL aqueous solution prepared by dissolving 55.0 g of a non-electrolyte solute had a freezing…

A: Depression in freezing point describes that the freezing point of a liquid (a solvent) is epressed…

Q: 1) so, / HSO. What is the major product of the following reaction : so,H 2) Ch / Feci, so,H so,H CI…

A: --> Benzene can give electrophilic aromatic substitution reaction. ->SO3/H2SO4 is reagent for…

Q: The force constant for a H"F molecule is 966 N m, and with a bond length of 91.7 pm, rotates in a…

A: The energy of a rigid-rotor for a diatomic molecule is given as:   E(J)=h28π2IJ(J+1)

Q: A healthful diet should have a distribution of macronutrients. In the following, match the caloric…

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

A:

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: 22. A 0.716 mole sample of gas is kept under 875 torr pressure and occupies 6.0 L of space. What…

A:

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

A:

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

A:

Q: 23. What volume of carbon dioxide gas at STP could be produced from the decomposition of 150.0 grams…

A: ★ Answer : 33.55 Litres CO2 gas will be produced at STP from the decomposition of 150g CaCO3. ★…

Q: 1. As shown, silicon for computer chips is grown in large cylinders called "boules" that are 300 mm…

A: a) Length of the Si boule = 2m = 2000 mm  Thickness of the wafers = 0.75 mm  Number of wafers that…

Q: A solution was prepared by dissolving 12.0 g of glucose (180 g/mol) in 150. mL solution. What is the…

A: Freezing point of solvent is greater than freezing point of solution

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

A: Here we are required to find the Gibbs energy of mixing when water and ethanol are mixed

Q: Question 9 Consider a solution consisting of 1.75 mol water and 0.97 mol ethanol. What is the Gibbs…

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Q: What is the equilibrium-constant expression of the basic dissociation of NaNO2?         Kb =…

A: Given-> NaNO2

Q: 17.55 g of an unknown compound decreased the freezing point of 138 g of benzene (Kf= 5.12 ∘C  /m) by…

A: Detail mathematical calculation is shown below

Q: 15. How many moles are in a 675 mL sample of gas at 313 K and 1.65 atm?

A: • The values provided in the question are:-       i) Pressure of a sample of gas, P = 1.65 atm…

Q: Provide an IUPAC name for the structure shown. H

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Q: 3. Predicting Products: Draw the structures of the major organic reagents / products of the reaction…

A: Note : Free radical substitution reaction under light ( see below).

Q: TIK |210 Compositon of one phase P.1 Vapour 292 290 P+2 Composton fsecond phase P2 Liquid 273 P.1…

A:

Q: The property of the solution remains constant even if its composition  varies.  True  False

A: Solution is made up of two  components: solute and solvent. Solvent is present in major amount and…

Q: The graph shows the titration of the aqueous solution containing 0.138 g of unknown monoprotic acid…

A: For a monoprotic acid and NaOH , first we right a balanced reaction. At equivalence point , acid and…

Q: 180.37 mL of 1.10 M organic salt was mixed with 185.23 mL of Ethanol (d= 0.789 g/mL, MW…

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Q: R `OOH

A:

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

A: Given the balanced Chemical equation -  C7H6O3(s) + C4H6O3(l) ------> C9H8O4(s) + CH3COOH(l)…

Q: Based on the ternary phase diagram, a binary mixture of furfural and water will always split into…

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Q: Use the proper graphing techniques to find the equivalence and half-equivalence points and determine…

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Q: Why does the concept of colligative properties apply only to dilute solutions? Eugenol is the active…

A: 1. Answer. : Colligative properties are properties of solutions that depend on the number of…

Q: Give some examples of gas in liquid solutions and their primary solute and solvent.

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Q: Mass =

A:

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

A: 1 pound of fat =  3500 calories

Q: 5. What volume will 400. mL of SO3 at 0°C and 760 mm Hg occupy at 110. °C when the pressure remains…

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Q: What is the percent of chloride ion in a sample if 2.500 g of the sample produces 1.750 g of AgCl…

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Q: The densities of aqueous solutions of copper (II) sulfate at 20 °C were measured as set out below.…

A: Molar mass of copper sulfate MW(CuSO4)=159.6 g/mol Moles n1 = mass1 / Molar mass = 52.6 / 159.6 =…

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

A: Here we are to find the valence electron count as well as the formal oxidation state of the metal.

Q: A buffer solution is made that is 0.475 M in HNO2 and 0.475 M in KNO2. If Ka for HNO2 is 4.50 x 10…

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

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Q: Given the volume of 0.4810 M NaOH used determine the concentration of 19 ml sample each from…

A: Given that, The concentration of the NaOH is 0.4810 M. The volume of the aqueous layer and the…

Q: For each of the following reactions, (i) write an equation, (ii) determine what is oxidized and what…

A:

Q: 2. Determine the molecular weight (molar mass) of gases at STP which have densities C a. 0.090 g/L…

A: At STP -> T = 273 K P = 1 atm

Q: 9. (a) How supramolecule is formed and what are the basic functions of supramolecule.

A: Please find your solution below : Suramolecule is a well defined complex molecule composed and…

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.