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 167 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
Excellent


bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

For a complete list of videos, visit our video library