Define a solvent for extraction of organic compounds

Reference no: EM13175623

Dimethyl ether, used as a solvent for extraction of organic compounds from aqueous solutions, has a high vapor pressure which makes it a potential fire hazard in labratories in which it is used. How much energy is released when 356.2g is cooled from 53.0 degrees C to 10.0 degrees C? Boiling point: 34.5 degrees C heat of vaporization: 351J/g specific heat, (CH3)2O(I): 3.74 J/(g(K) specific heat, (CH3)2(O)(g):2.35 J/(g(K)
A. -1.08E5 J
B. -1.42E5 J
C. 7.69E4 J
D. -1.73E5 J
E.-7.69E4 J

Reference no: EM13175623

Questions Cloud

Compute the molar mass of the solute : A solution that contains 87.2g of an unknown compound in 392.4g of water freezes at -8.00 degrees C. Calculate the molar mass(in units of g/mol) of the solute. Kf of water is 1.86 degrees C/m.

Major economic concepts for right decision making : With an unprofitable rural hospital that was offered a contract at a lower price, what are major economic concepts that are important in making the right decision?

Define what is the vapor pressure : The molar enthalpy of vaporization of boron tribromide is 30.5 kJ/mol, and it's normal boiling point is 91degrees C. What is the vapor pressure of BBr3 at 34 degrees C.

What are addictive substances : Sixteen states sue the major tobacco companies for billions of dollars because of tobacco-related costs in their Medicaid programs. Medical evidence that more than two cups of coffee a day (Considered by many to be a substitute for smoking) greatl..

Define a solvent for extraction of organic compounds : Dimethyl ether, used as a solvent for extraction of organic compounds from aqueous solutions, has a high vapor pressure which makes it a potential fire hazard in labratories in which it is used

Describe domestic sales : A domestic shoe company distributes running shoes and tennis shoes for $95 per pair. The marginal cost of producing a pair of running shoes is $60, and the marginal cost of producing a pair of tennis shoes is $45.

Compute the molar solubility of agbr : Calculate the molar solubility of AgBr in 4.0 M NH3. Kf for Ag(NH3)2 is 1.7 x 10^7 and Ksp for AgBr is 5.0x10^-13 5. What is the pH at the equivilaence point when 45 mL of 0.125 M acetic aced is titrated with 0.225 M NaOH? Ka for acetic acid is 1.7..

How to make the most efficient decisions over product lines : Inside the corporation there are ...... systems that motivate individuals and teams to make the most efficient decisions over product lines.A job in sales - such as a sales representative for an agricultural chemical company usually represents

Open system at equilibrium with normal atmospheric levels : open system at equilibrium with normal atmospheric levels of carbon dioxide to show the approximate PH of pure rain water, assuming Pco2=10^-3.5 atm?

User Account

All Pages