« previous next »

Author Question: Which substance has the lowest surface tension? a. Water at 20 C c. Blood at 37 C b. Water at 37 ... (Read 86 times)

RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
on: Jul 16, 2018
Which substance has the lowest surface tension?
 
  a. Water at 20 C c. Blood at 37 C
  b. Water at 37 C d. Ethyl alcohol at 20 C

Question 2

The surface tension of a liquid:
 
  a. does not vary with temperature. c. increases as tem-perature decreases.
  b. increases as tem-perature increases. d. decreases as tem-perature increases.


matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
See Table 1-2.

Answer to Question 2

ANS: D
The surface tension of any given liquid varies inversely with its temperature. Adding heat to a liquid causes the molecules to move more vigorously and break the bonds that are holding them in liquid form.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

RODY.ELKHALIL

  • Hero Member
  • *****
  • Posts: 591
Reply #2 on: Jul 16, 2018
Thank you :)


matt

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jul 16, 2018
Happy to help you


« previous next »
 

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Salt and water balance in water-breathers. Salt and water balance in water-breathers.
ABO Blood Reactions Are Important in Transfusions ABO Blood Reactions Are Important in Transfusions
water molecules water molecules
Blood Pathway Blood Pathway
Effects of Differences in Solute Concentration on the Movement of Water Molecules Effects of Differences in Solute Concentration on the Movement of Water Molecules
Water caltrop Water caltrop
Video: Arthritis

For a complete list of videos, visit our video library