Evaluate the molality of the solution

Assignment Help Chemistry
Reference no: EM13254258

Adrenaline is a hormone released in response to physical and mental stress. A solution is prepared with 1.5g of adrenaline in 175g. of CCl4 (Tf= -22.3 degrees celcius and Kf = 29.8 C/m.) The freezing point of the solution was determined experimentally to be -23.7 degrees Celcius

a) determine the freezing point depression of the solution

b) Calculate the molality of the solution.

c) Calculate the molar mass of the solute using the expirimental data provided

Reference no: EM13254258

Questions Cloud

How the buying center fits into an organization structure : Explain how the "buying center" fits into an organization's structure.
How does any change the way circuits are analyzed : Discuss the advantages of transforming time-domain circuits into the corresponding frequency domain. How does this change the way circuits are analyzed
Analysing role of auditing in companys annual report : Analysing role of auditing in company's annual report / public disclosure - select a public listed company with disclosures available from companys website
Calculate the wavelength : Calculate the wavelength ?1 for gamma rays of frequency f1 = 6.40×10^-14 Now express this gamma-ray wavelength in nanometers
Evaluate the molality of the solution : Adrenaline is a hormone released in response to physical and mental stress. A solution is prepared with 1.5g of adrenaline in 175g. of CCl4 (Tf= -22.3 degrees celcius and Kf = 29.8 C/m.) The freezing point of the solution was determined experiment..
What aspects of the healthcare system : What aspects of the healthcare system are you most familiar with? How have you gained this knowledge? What are some of the things that most people don't know about it? What would you like to tell Congress and the President about it?
Why phasor analysis can only be perform on single-frequency : Discuss why phasor analysis can only be performed on single-frequency circuits. For multiple frequencies what type of analysis must be performed
Find the electric force at the center of this distribution : Four charges are located in the x-y plane as follows: q@(0,0); 3q @ (a,0); 2q @ (0,a) and -4q @ (a,a). What is the electric force at the center of this distribution
What is the initial net cash flow : what is the initial net cash flow if the new machine is purchased and the old one is replaced?

Reviews

Write a Review

Chemistry Questions & Answers

  Find out the entropy change for heating nitrogen gas

Determine the entropy change for heating nitrogen gas from 25 oC to 100oC under the following conditions. Cp =29.1J·K?1 ·mol?1.

  Compute the ph of a buffer that contains acetic acid

Calculate the ph of a buffer that contains 1.0 M acetic acid and 1.0 M sodium acetate. (ka=1.8x10^-5)

  Define the temperature inside a pressure cooker

The temperature inside a pressure cooker is 1150C. Calculate the vapor pressure of the water inside the pressure cooker.

  What is the molar mass of the protein

A 15.0 mg sample of a protein is dissolved in water to make 27.0 ml of solution. The osmotic pressure of the solution is 0.56 torr at 25 C. What is the molar mass of the protein?

  What is the molarity of na+ ions in blood

the average adult has about 16 g of sodium ions in her blood. assuminga total blood volume of 5.0 L, what is the molarity of Na+ ions in blood?

  Explain a working voltaic cell that incorporates

describe a working voltaic cell that incorporates a standard nickel half-cell and that has a net cell potential greater than 1 V. Include: 1. balanced equations and Enet calculations

  State individual balanced equation for the dissolving

write an individual balanced equation for the dissolving of each salt in solution, including phase labels B) what was the concentration in molarity if each ion in solution, Mg 2+, Na+, Cl-?

  Explain what is the rate law predicted by this mechanism

is believed to follow the mechanism H2O2 + I- ? H2O + IO- fast H2O2 + IO- ? H2O + O2 + I- slow At 25oC, the first step is fast relative to the second step. What is the rate law predicted by this mechanism?

  How many moles of iron would form

6Na+Fe2O3->3Na2O+ 2Fe. If you are provided 20.0 moles of sodium & excess iron (III) oxide, how many moles of iron would form?

  State and draw the structure of the cis and trans isomers

Draw the structure of the cis and trans isomers of the compound you prepared from last question. Why did you obtain the trans isomer?

  State needs intense purification.

There is less waste. II. Harsh reagents are avoided. III. It uses recombinant technology. IV. It needs intense purification.

  Find out the ph of a solution

Determine the pH of a solution of a .150 M NaF solution. (ka for HF=3..5*10^-4) 3)Determine the pH of .050 M H2CO solution and the % dissociation of each step

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd