« 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 88 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?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

Did you know?

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

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Spanish water dog (Perro de agua español). Spanish water dog (Perro de agua español).
The Pathways of Water and Solutes in a Plant The Pathways of Water and Solutes in a Plant
blood supply blood supply
Evidence of Water on Mars Evidence of Water on Mars
Surface Features on Titan Surface Features on Titan
Surface Water Parsing Surface Water Parsing
Video: Labor and Childbirth - The Three Stages of Labor: Dilation, Expulsion & Placental مراحل الولادة

For a complete list of videos, visit our video library