Define the freezing point of pure benzene

Assignment Help Chemistry
Reference no: EM13268173

A solution of 2.5g of an unknown non-volatile, non-electrolyte dissolved in 25 g of benzene freezes at 4.3 Celsius. The freezing point of pure benzene is 5.5 Celsius and its freezing point constant is 5.12 C/m. Calculate the molecular weight of the unknown.

Reference no: EM13268173

Questions Cloud

How to calculate the molecular weight of the compound : A quantity of 7.48g of a compound is dissolved in water to make 300 mL of solution. The solution has an osmotic pressure of 1.43 atm at 27 Celsius. Calculate the molecular weight of the compound.
What is the power of one laser pulse : LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. What is the power of one laser pulse
What is the current market value of one of these bonds : Maryland Department of Transportation has issued 25-year bonds that make semiannual coupon payments at a rate of 9.93 percent. The current market rate for similar securities is 10.79 percent.
What was the dollar value of the underpricing associated : On August 19, 2004 Google issued its IPO of 18.7 million shares to the initial investors at $82.42 per share. The closing price of the stock that same day was $98.08. What was the dollar value of the underpricing associated with the Google IPO?
Define the freezing point of pure benzene : The freezing point of pure benzene is 5.5 Celsius and its freezing point constant is 5.12 C/m. Calculate the molecular weight of the unknown.
What was the loss to the company due to underpricing : When Global Partners went public in September 2008, the offer price was $22.00 per share and the closing price at the end of the first day was $24.10. The firm issued 5.30 million shares. What was the loss to the company due to underpricing?
Explain what is the vapor pressure of a solution made : what is the vapor pressure of ethanol at 20 celcius is 44mm, and the vapor pressure of methanol at the same temperature is 94 mm. Assuming an idea solution, what is the vapor pressure of a solution made from 30.0g of methanol and 45 g of ethanol
Calculate the length of pipe : The lowest pedal note on a particular large pipe organ has a fundamental frequency of 15.7 Hz. What is the length of pipe between the sounding hole and the open end
Find how many frames are allocated to process d : A pool of 200 frames exists for paging of processes A, B, C, D, and E. The processes' page sizes are 100, 200, 50, 150, and 500, respectively. Assuming proportional frame allocation is being deployed, how many frames are allocated to process D

Reviews

Write a Review

Chemistry Questions & Answers

  Classify the reactions below as synthesis, decomposition

classify the reactions below as synthesis, decomposition, single replacement(cationic or anionic) or double replacement

  What is the stereochemical relationship of the products

What is the stereochemical relationship of the products formed by reacting racemic lactic acid with (S)-1-phenylethylamine?

  What is sum of all the coefficients in balanced equation

What is the sum of all the coefficients in the balanced equation?

  Explain what relationship exists between ph and pka

If a volume of 21.00 ml of NaOH solution is required to reach the equivalence point in titration of a weak acid, what relationship exists between pH and pKa of the acid after 9.00 ml of the NaOH solution has been added?

  Supposing that the atomspher is locally isothermal

assuming that the atomspher is locally isothermal, the air density variation with pressure is giving by B=B0*(P/P0) where B is density ,p is pressure , and the subscript 0 denotes conditions at the earth's surface.

  How many grams mtbe must be present in each gasoline

If fuel mixtures are required to contain 3.0 oxygen by mass, how many grams MTBE must be present in each 110 gasoline.

  State the decomposition of hydrogen peroxide is first order

The decomposition of hydrogen peroxide is first order in H2O2. 2H2O2 -----> 2H2O + O2 The rate constant for this reaction at 20 C is 1.8 * 10^-5 s^-1

  Explain what is the dissociation constand

What is the dissociation constand, Kd, of a ligand with a percent occupancy

  What is the percent yield of a reaction

What is the percent yield of a reaction in which 238 g phosphorus trichloride reacts with excess water to form 143 g HCl and aqueous phosphorus acid (H3PO3)?

  Define what is the concentration of urea

The decomposition of urea in 0.1 M HCl is first order in urea and first order overall. When [urea] = 0.200 M , the rate at 61.0 °C is 8.56 x 10-5 M/s. What is the concentration of urea in this solution after 4751 s if the starting concentration is 0..

  Define what is the density of concentrated sulfuric acid

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g

  Explain pheromones are compounds secreted by the females

Pheromones are compounds secreted by the females of many insect species to attract males. One of these compounds contains 80.78 percent C, 13.56 percent H

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