« previous next »

Author Question: Polychlorinated biphenyls (PCBs) have been banned because they are an environmental hazard. Which of ... (Read 66 times)

kwoodring

  • Hero Member
  • *****
  • Posts: 560
on: Aug 27, 2018
Polychlorinated biphenyls (PCBs) have been banned because they are an environmental hazard. Which of the following was NOT a reason for banning them?
 
  A) PCBs degrade slowly in nature.
  B) PCBs are nonpolar compounds and do not dissolve readily in water.
  C) PCBs have high electrical resistance and are excellent insulating materials.
  D) They lower the glass transition temperature, Tg, when they are added to a polymer.

Question 2

Soaps are
 
  A) anionic surfactants.
  B) nonionic surfactants.
  C) neutral surfactants.
  D) positive surfactants.


otokexnaru

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

kwoodring

  • Hero Member
  • *****
  • Posts: 560
Reply #2 on: Aug 27, 2018
Thanks


otokexnaru

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Aug 27, 2018
Welcome :)


« previous next »
 

Did you know?

Alcohol acts as a diuretic. Eight ounces of water is needed to metabolize just 1 ounce of alcohol.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Environmental Energy Flow Environmental Energy Flow
Environmental Issues Environmental Issues
Environmental Issues Environmental Issues
The environmental policy changes over time The environmental policy changes over time
The developing organism senses maternally transmitted environmental cues The developing organism senses maternally transmitted environmental cues
A company that makes environmental measuring devices has calculated their revenue and costs as ... A company that makes environmental measuring devices has calculated their revenue and costs as ...
Video: Bond types - Atomic structure and basis of bonds

For a complete list of videos, visit our video library