This topic contains a solution. Click here to go to the answer

Author Question: Coal contains only minute quantities of radioactive materials, yet there is more environmental ... (Read 92 times)

neverstopbelieb

  • Hero Member
  • *****
  • Posts: 534
Coal contains only minute quantities of radioactive materials, yet there is more environmental radiation surrounding a coal-fired power plant than a fission power plant. This indicates that ________.
 
  A) the coal-fired power plant's radiation shields need to be strengthened
  B) the coal-fired power plant has been contaminated
  C) the coal-fired power plant contains none of the radiation it releases
  D) the news media is biased in its coverage

Question 2

Why does transforming water from 100C liquid to 100C gas require much more energy than to raise the temperature of the same amount of water from absolute zero all the way to 100C liquid?
 
  A) While water is in the solid phase, it is only necessary to impart energy to the water molecules themselves. Once in the liquid phase much more heat is required to impart sufficient energy to the molecules because there is more volume present.
  B) False It does not require more energy to transform water from 100C liquid to 100C gas than to raise the temperature of the same amount of water from absolute zero all the way to 100C liquid.
  C) Transforming water from 100C liquid to 100C gas requires breaking the hydrogen bonds between the liquid molecules.
  D) The amount of heat required to raise the temperature of the water or transform its phase is directly proportional to the densities of the water molecules involved. Obviously, driving liquid water to the vapor will drastically change its density.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kingdude89

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

C

Answer to Question 2

C




neverstopbelieb

  • Member
  • Posts: 534
Reply 2 on: Aug 27, 2018
:D TYSM


carojassy25

  • Member
  • Posts: 299
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

For a complete list of videos, visit our video library