« previous next »

Author Question: Chloroform is a volatile liquid once commonly used in the laboratory but now being phased out due to ... (Read 52 times)

notis

  • Hero Member
  • *****
  • Posts: 596
on: Aug 27, 2018
Chloroform is a volatile liquid once commonly used in the laboratory but now being phased out due to its ozone depletion potential.
 
  If the pressure of gaseous chloroform in a flask is 195 mm Hg at 25C and its density is 1.25 g/L, what is the molar mass of chloroform?
  A) 10.0 g/mol
  B) 76.3 g/mol
  C) 119 g/mol
  D) none of the above

Question 2

The molarity of urea in a solution prepared by dissolving 16 g of urea (MW = 60.0 g/mol) in 39 g of H2O is ________ M. The density of the solution is 1.3 g/mL.
 
  A) 0.11
  B) 3.7
  C) 6.8
  D) 6.3
  E) 0.16


miss.ashley

  • Sr. Member
  • ****
  • Posts: 371
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Chuckwalla body lengths at the end of a laboratory rearing experiment Chuckwalla body lengths at the end of a laboratory rearing experiment
Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Drugs Commonly Stocked in an Emergency Medical Box Drugs Commonly Stocked in an Emergency Medical Box
Comparison of Household, Apothecary, and Metric Liquid Measurements Comparison of Household, Apothecary, and Metric Liquid Measurements
A boiling-liquid, expanding-vapor explosion (BLEVE). The burning propane cylinder on the left is not ... A boiling-liquid, expanding-vapor explosion (BLEVE). The burning propane cylinder on the left is not ...
The bacterium Escherichia coli is commonly referred to as E. coli. Seen here with multiple flagella The bacterium Escherichia coli is commonly referred to as E. coli. Seen here with multiple flagella
Video: Mechanisms of capillary exchange

For a complete list of videos, visit our video library