Pure benzene freezes at 5.50°C. A0.9905 gram sample of an unknown nonelectrolyte is dissolved in 15.388 grams of benzene and this solution freezes at 2.90°C. What is the molar mass of the unknown? +K = 5.12 °C/m AT = iK+M

Pure benzene freezes at 5.50°C. A0.9905 gram sample of an unknown nonelectrolyte is dissolved in 15.388 grams of benzene and this solution freezes at 2.90°C. What is the molar mass of the unknown? +K = 5.12 °C/m AT = iK+M

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 47P

See similar textbooks

Related questions

Q: = 1.6 x 10-10 Given the reactions below, calculate the molar solubility of AgCl (s) in 0.566 M NH3…

A: Step 1: Step 2:There is 0.566 instead of 0.655 by mistake I solved this acc to 0.655 ... Hope you…

Q: Predict the major products of this reaction. Cl₂ hv ? Draw only the major product or products in the…

Q: Calculate the energy required to heat 143.0 g of mercury from -3.2 °C to 2.7 °C. Assume the specific…

A: Step 1: Given - Initial temperature Ti = -3.20C = -3.2 +273 = 269.8 K Final temperature Tf =…

Q: Consider the hypothetical bimetallic titanium dinitrogen complexes (N2C, (μ-N2) [TiCl2L312. neutral…

A: a. Drawing Reasonable StructuresBridging Dinitrogen (μ-N2): In all three compounds (A, B, and C),…

Q: A sharp green line in the emission spectrum of mercury vapor can beobserved at a wavelength of ~ 520…

Q: Draw the structure(s) of the major organic product(s) of the following reaction after aqueous…

A: After reaction of aniline and acetic anhydride, the main product will be N_acetylaniline.However,…

Q: d. H3N H₂C!!!! H3CW H H-N 'N' Ph 4|1!!! HCl(aq)

A: Step 1: Identify the Central Atom and ChargeThe central atom is Nitrogen (N) with three single…

Q: What is the concentration of A after 10.5 minutes for the reaction A → Products when the initial…

A: The objective of this question is to find the concentration of reactant A after a certain time…

Q: please draw out solutions

A: Sure, I can help you draw out the solutions to the following reactions which involve stereochemistry…

Q: Which of the following solutions would make an effective buffer? 1. HCIO and NACIO II. NaOH and NaBr…

A: The objective of the question is to identify which of the given pairs of substances would make an…

Q: *Reaction is in image* Questions based on reaction in image: The oxidizing agent is: The reducing…

A: When one species loses the electrons increasing its oxidation number is called oxidized and the…

Q: None

A: Step name of the compound is "2-bromo-7-methyloctan-3-one" Steps followed while naming are :- 1.…

Q: Provide the correct IUPAC name for the compound shown here. CI CH3 CH3

A: Step 1IuPAC name of molecule is 1-chloro-3-methylpentaneNaming process 1. Identify the longest…

Q: need help with major product

Q: A PB tablet containing 425 mg of BSS is combined with HCl. The solution is filtered, transferred to…

A: Step 1:

Q: None

A: A six-carbon chain forms the backbone.A methyl group (CH3) is attached to the third carbon (C-3) of…

Q: 2) A Diels-Alder reaction yields the following compound. Please write the structure of diene and…

A: If you find this answer good please rate it helpful. If any query then raise it.Thank You!

Q: starting with ethyl acetoacetate and formaldehyde as your only source of carbons synthesize the…

Q: Use this information to answer each question: A student constructs an electrochemical cell with a…

A: The objective of the question is to determine the correct expression for the reaction quotient…

Q: Show a complete synthesis of the following molecule starting with cyclohexane (as many times as you…

A: Step 1: We can take the following methodical strategy to synthesize the target compound, beginning…

Q: dont provide handwriting soliution ......

A: Step 1: given line segment with endpoint (-4, -1) and (0, -2) We have…

Q: Use the standard reduction potentials given below to predict if a reaction will occur when Cd metal…

A: Answer:Based on the standard reduction potentials provided, a reaction will indeed occur when Cd…

Q: QUESTION 2 Which one of the following is not a redox reaction? A) Al(OH)4(aq) + 4H+(aq) → A13+ (aq)…

A: Step 1: Step 2: Step 3: Step 4:

Q: A common alkyne starting material is shown below. Predict the major product or missing reagent to…

A: Thank you,Please rate my response.

Q: None

A: The question asks for the IUPAC name of the following compound:[asy] unitsize(0.4 cm);pair A, B, C,…

Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) + O2(g) → 2NO(g) (2)…

Q: What is the calculated value of the cell potential at 298K for an electrochemical cell with the…

A: Step 1:(1)To calculate the cell potential for the given electrochemical cell reaction, we need to…

Q: Give a full curved arrow pushing mechanism for the following reaction. You can use the abbreviated…

A: Step 1: This is imine formation reaction. In this reaction cyclohexanone reacts with ammonia in the…

Q: Follow the Instructions to build the following ion that will satisfy octet rule : [NO2]- Hint: use…

A: There is a total of six lone pairs in the nitrite ion. Here's the breakdown:3 lone pairs on single-…

Q: None

A: Step 1: 1 H NMR spectroscopy is useful to determine types of hydrogen, their signals, spitting etc…

Q: None

A: Approach to solving the question: Detailed explanation: Examples: Key references:

Q: Predict the products for the following reactions. 1. NaOH 2. 3. H3O+ О 1. CH3MgBr 2. H3O+ 1.…

A: The text in the image refers to a spring with constant k attached to a mass m on a frictionless rod.…

Q: 1. Draw the partially expanded structures of the amino acids serine and alanine. See Table 1 in the…

Q: Question 9

A: Steps to read the readingStep 1: When a transparent liquid is placed in glass ware (like measuring…

Q: Convergent syntheses are more efficient than linear syntheses because you risk less if one branch of…

A: Key references: Kaltenberger, S., & van Gemmeren, M. (2023). Controlling Reactivity and…

Q: Indicate how to synthesize 5-Methyl-3-hexanone from 1,3-dithiane.

A: The objective of this question is to outline a method for synthesizing 5-Methyl-3-hexanone from…

Q: CH3 CH3 CH3 O-H NaOH heat Drawing >

Q: Which reaction will occur if each substance is in its standard state? Assume potentials are given in…

A: Approach to solving the question: I believe that this is the complete question together with its…

Q: Please provide the correct IUPAC names, including any configurations that may be present

A: In IUPAC nomenclature we first find in a structure the longest continuous carbon chain which we…

Q: A 25.0 mL aliquot of 0.0580 M EDTA was added to a 47.0 mL solution containing an unknown…

A: Step 1: Here EDTA will make complex with v+3 and remaining EDTA will react with Ga+3 So the…

Q: Draw the structure(s) of the major organic product(s), including counterions, of the following…

A: I can help you with this chemistry question which asks you to draw the structure of the major…

Q: Question 14

A: The balanced equation for the reaction of zinc with hydrochloric acid is:Zn(s) + 2HCl(aq) →…

Q: None

A: To calculate the entropy change (ΔS) for the vaporization of water at 100°C, we can use the…

Q: Please describe the mechanism in words for the reaction below. DO NOT provide a mechainism.

A: The question is asking to describe the mechanism of Jones' Oxidation Test for Secondary and Primary…

Q: The following shows 1.00L bulbs connected by valves. Each bulb contains neon gas with amounts…

A: To solve this problem, we'll use the ideal gas law, which states:PV=nRTWhere:- P is the pressure…

Q: Which of the following is the correct expression Qrxn for the reaction occurring within this cell?…

A: The objective of the question is to determine the correct expression for the reaction quotient…

Q: Question 15

A: Step 1:

Q: Indicate the products X and Y that are obtained in the following reactions. Briefly comment on each…

A: References; Smith, M. B. (2020). March's advanced organic chemistry: reactions, mechanisms, and…

Q: Construct the molecular orbital diagram for H,. H H₂ H 1 1s 0* Identify the bond order. 0 • 0.5 1.5…

A: The objective of this question is to construct the molecular orbital diagram for the hydrogen…

Q: For 1 and 2, show the products of the following reaction:

A: Step 1:Step 2:

Question

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

The dispersed phase of a certain colloidal dispersion consists of spheres of diameter 1.0 102 nm. (a) What are the volume (V=43r2) and surface area (A = r2) of each sphere? (b) How many spheres are required to give a total volume of 1.0 cm3? What is the total surface area of these spheres in square meters?
Which solute has the greatest effect on the boiling pointof 1.00 kg of water: 50.0 g of strontium chloride (SrCl2) or 150.0 g of carbon tetrachloride (CCl4) ? Justify youranswer.
What quantity of ethylene glycol, HOCH2CH2OH, must be added to 125 g of water to raise the boiling point by 1.0 C? Express the answer in grams.
For each of the following pairs of solutions, select the solution for which solute solubility is greatest. a. Ammonia gas in water with P = 1 atm and T = 50C Ammonia gas in water with P = 1 atm and T = 90C b. Carbon dioxide gas in water with P = 2 atm and T = 50C Carbon dioxide gas in water with P = 1 atm and T = 50C c. Table salt in water with P = 1 atm and T = 60C Table salt in water with P = 1 atm and T = 50C d. Table sugar in water with P = 2 atm and T = 40C Table sugar in water with P = 1 atm and T = 70C
a. Use the following data to calculate the enthalpy of hydration for calcium chloride and calcium iodide. Lattice Energy Hsoln CaCl2(s) 2247kj/mol 46kj/mol Cal2(s) 2059kj/mol 104kj/mol b. Based on your answers to part a, which ion, Cl or I, is more strongly attracted to water?
Calculate the molality of a solution made by dissolving 115.0 g ethylene glycol, HOCH2CH2OH, in 500. mL water. The density of water at this temperature is 0.978 g/mL. Calculate the molarity of the solution.
A forensic chemist is given a white solid that is suspected of being pure cocaine (C17H21NO4, molar mass = 303.35 g/mol). She dissolves 1.22 0.01 g of the solid in 15.60 0.01 g benzene. The freezing point is lowered by 1.32 0.04C. a. What is the molar mass of the substance? Assuming that the percent uncertainty in the calculated molar mass is the same as the percent uncertainty in the temperature change, calculate the uncertainty in the molar mass. b. Could the chemist unequivocally state that the substance is cocaine? For example, is the uncertainty small enough to distinguish cocaine from codeine (C18H21NO3, molar mass = 299.36 g/mol)? c. Assuming that the absolute uncertainties in the measurements of temperature and mass remain unchanged, how could the chemist improve the precision of her results?
Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride (CaCl2) is sometimes used for this purpose too. Let us compare the effectiveness of equal masses of these two compounds in lowering the freezing point of water, by calculating the freezing point depression of solutions containing 200. g of each salt in 1.00 kg of water. (An advantage of CaCl2 is that it acts more quickly because it is hygroscopic, that is. it absorbs moisture from the air to give a solution and begin the process. A disadvantage is that this compound is more costly.)
Instead of using NaCl to melt the ice on your sidewalk you decide to use CaCl2. If you add 35.0 g of CaCl2 to 150. g of water, what is the freezing point of the solution? (Assume i = 2.7 for CaCl2.)
Calcium chloride, CaCl2, has been used to melt ice from roadways. Given that the saturated solution is 32% CaCl2 by mass, estimate the freezing point.
Fluoridation of city water supplies has been practiced in the United States for several decades. It is done by continuously adding sodium fluoride to water as it comes from a reservoir. Assume you live in a medium-sized city of 150,000 people and that 660 L (170 gal) of water is used per person per day. What mass of sodium fluoride (in kilograms) must be added to the water supply each year (365 days) to have the required fluoride concentration of 1 ppm (part per million)that is, 1 kilogram of fluoride per 1 million kilograms of water? (Sodium fluoride is 45.0% fluoride, and water has a density of 1.00 g/cm3.)
The Rast method uses camphor (C10H16O) as a solvent for determining the molar mass of a compound. When 2.50 g of cortisone acetate are dissolved in 50.00 g of camphor (k f =40.0C/m), the freezing point of the mixture is 173.44C; that of pure camphor is 178.40C. What is the molar mass of cortisone acetate?