« 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 154 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?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

An alternating pneumatic compression device squeezes the leg tissues causing blood to move toward th An alternating pneumatic compression device squeezes the leg tissues causing blood to move toward th
Fragrant water lily Fragrant water lily
Water (Its Volume Expansion Upon Freezing) Water (Its Volume Expansion Upon Freezing)
Blood vessels: (A) normal artery; (B) constriction; (C) arteriosclerosis and atherosclerosis. Blood vessels: (A) normal artery; (B) constriction; (C) arteriosclerosis and atherosclerosis.
Anemic Red Blood Cells Anemic Red Blood Cells
A container in the shape of a right circular cylinder with no top has surface area square feet. A container in the shape of a right circular cylinder with no top has surface area square feet.
Video: Introduction to Breast Cancer

For a complete list of videos, visit our video library