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 145 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


Sarahjh

  • Member
  • Posts: 370
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

For a complete list of videos, visit our video library