This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A 0.286-g sample of gas occupies 125 mL at 60. cm of Hg and 25C. What is the molar mass of the gas? ... (Read 122 times)

lilldybug07

  • Hero Member
  • *****
  • Posts: 546
on: Aug 27, 2018
A 0.286-g sample of gas occupies 125 mL at 60. cm of Hg and 25C. What is the molar mass of the gas?
 
  A) 5.9 g/mol
  B) 44 g/mol
  C) 59 g/mol
  D) 71 g/mol

Question 2

A solution is prepared by adding 40.00 g of lactose (milk sugar) to 110.0 g of water at 55 C The partial pressure of water above the solution is ________ torr.
 
  The vapor pressure of pure water at 55 C is 118.0 torr. The MW of lactose is 342.3 g/mol.
  A) 2.216
  B) 125.5
  C) 225.9
  D) 115.8
  E) 86.5


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fwbard

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

D


lilldybug07

  • Member
  • Posts: 546
Reply 2 on: Aug 27, 2018
Excellent

alvinum

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Sample of an informed consent to perform an operation, sedation, anesthesia, and other medical servi Sample of an informed consent to perform an operation, sedation, anesthesia, and other medical servi
Air-mass thunderstorms—mT air masses Air-mass thunderstorms—mT air masses
Mass spectrometry (MS) for Mass, Sequence, and Amino Acid Analyses of Purified Proteins Mass spectrometry (MS) for Mass, Sequence, and Amino Acid Analyses of Purified Proteins
A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ... A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ...
Mass spectrometry for identifying an unknown protein isolated from a 2D gel Mass spectrometry for identifying an unknown protein isolated from a 2D gel
What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g? What is the isotopic atomic mass of an isotope if 9.7023 1022 atoms weighs 4.0256 g?
Video: Protein digestion - stomach & small intestine

For a complete list of videos, visit our video library