Explain the dumas method for determining molar masses

Assignment Help Chemistry
Reference no: EM13655503

A liquid was known to be either methyl alcohol (CH3OH) or ethyl alcohol (CH3CH2OH). The Dumas method for determining molar masses was used to obtain an approximate molar mass, and this value was used to identify the alcohol. The gaseous alcohol at 98oC and 740Torr has a mass of 0.276g in a Dumas bulb of volume equal to 270mL. Which alcohol was present?

Reference no: EM13655503

Questions Cloud

Find the recoil of the gun : The gun of a barrel is .600m long. A bullet is shot at apendulum that reaches a height of 1.8m once the bullet strikes. Find the recoil of the gun
What is the range of transfer prices within both division : a. What is the range of transfer prices within which both the Divisions' profits would increase as a result of agreeing to the transfer of 4,000 special parts per year from the Parts Division to the Machinery Division?
Describe how distant is the probe : The team monitoring a space probe exploring the outer solar systemfinds that radio transmissions from the probe take 4.50 hours to reach earth. How distant (in meters) is the probe
Projectile is launched from ground level at an angle : A projectile is launched from ground level at an angle of 1.0° above the horizontal. It returns to ground level. To what value should thelaunch angle be adjusted, without changing the launch speed, sothat the range triples?
Explain the dumas method for determining molar masses : The Dumas method for determining molar masses was used to obtain an approximate molar mass, and this value was used to identify the alcohol. The gaseous alcohol at 98oC and 740Torr has a mass of 0.276g in a Dumas bulb of volume equal to 270mL. Whi..
Find where will the fragment land : In a volcanic eruption, a 2400-kg boulder is thrown vertically upward into the air. Where will the fragment land
Find electron speed just before electron strikes the screen : In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 18000V. The speeds of the electrons are quite large, and for accuratecalculations of the speeds, the effects of special r..
Derive the cost formula for truck operating costs : Derive the cost formula for truck operating costs.
Determine how far would it have to drop in free fall : An airplane propeller is 2.08 m in length (from tip to tip) and hasa mass of 117kg. If it were not rotating, how far would it have to drop infree fall to acquire the same kinetic energy

Reviews

Write a Review

Chemistry Questions & Answers

  State maintain a more consistent matrix in a solution

To keep ionic strength constant and maintain a more consistent matrix in a solution where ions could be influencing each other, another component is often added to the solution

  Explain what is the concentration of the ammonium ion

What is the concentration of the ammonium ion (in M) in a solution which contains 51 g ammonium sulfide in 635 mL of solution

  State the chemistry behind ascorbic acid problem

Determine the [H3O+] and pH of each of the following solutions at about room temperature. Be certain to show the chemistry behind each problem.

  Explain heat realsed by combustion of ethyl ether

Heat realsed by combustion of ethyl ether, 1. In earlier times, ethyl ether was commonly used as an anesthetic. It is, however, highly flammable. When 5.0 mL of ethyl ether C4H10 (l), (d=0.714 g/mL) is burned in a bomb calorimeter

  Explain the molar fraction of benzene in the liquid phase

What are the values of (i) the pressure, (ii) the molar fraction of benzene in the liquid phase, and (iii) the molar fraction of benzene in the vapor phase when 1/4 the initial vapor phase has condensed

  Explain what is the molar mass of the compound

You dissolve the sample in .550 mL of water and determine that the osmotic pressure of the resulting solution is .107 torr at 35 deg C (760 torr = 1.00 atm). What is the molar mass of the compound?

  Define the ph at the points in the titration

Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.

  Compute the pressure at which hydroquinone

The normal boiling point of hydroquinone is 310°C. Calculate the pressure at which hydroquinone will boil at 200°C given that its Hvap is 73.38 kJ/mol.

  How to calculate the ph at equivalence point

Calculate the pH at equivalence point when 40.0 ml of 0.50 M aniline is titrated with 30.0 ml of 0.67 M HBr. For aniline Kb=3.8x10exp-10

  How many grams of glucose are in the final solution

A 45.0-rm mL sample of this glucose solution was diluted to 0.500 rm L. How many grams of glucose are in 100. rm mL of the final solution?

  Sugar 8200 grams molar mass 3423 gmol was dissolved in

sugar 82.00 grams molar mass 342.3 gmol was dissolved in water. the freezing point of the solution was determined to be

  How to calculate the molar mass of the unknown

A solution made from 6.50 g of an unkown compound in 27.8 g of diphenyl has a molality of 0.195 m. Calculate the molar mass of the unknown

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