« 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 115 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?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

red blood cells red blood cells
The pH of human blood ranges from 7.35 to 7.45. The pH of human blood ranges from 7.35 to 7.45.
Cardiovascular and renal control of blood pressure. Cardiovascular and renal control of blood pressure.
Apply the substance to the arm with long, smooth strokes, then cover the arm and abdomen with the ... Apply the substance to the arm with long, smooth strokes, then cover the arm and abdomen with the ...
Length-Tension Relationship Length-Tension Relationship
Blood Groups and Blood Types Blood Groups and Blood Types
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library