This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Hard water contains excessive amounts of ________. A) fluoride ions B) calcium ions C) water ... (Read 102 times)

jwb375

  • Hero Member
  • *****
  • Posts: 540
on: Aug 27, 2018
Hard water contains excessive amounts of ________.
 
  A) fluoride ions
  B) calcium ions
  C) water ions
  D) magnesium ions
  E) Two of the above are the most appropriate answers.

Question 2

What is a similarity between pesticides and medical drugs?
 
  A) They need to selectively target the invader but not harm the host.
  B) They have to have a minimum amount of side effects.
  C) They should be readily decomposed into non-harmful byproducts.
  D) all of the above
  E) only A and B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

momo1250

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Aug 27, 2018
Answer to Question 1

E

Answer to Question 2

D


jwb375

  • Member
  • Posts: 540
Reply 2 on: Aug 27, 2018
Great answer, keep it coming :)

Viet Thy

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

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?

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?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Philippine Spider Water Beetle Philippine Spider Water Beetle
A pygmy hippopotamus rests in some water to help prevent its skin from cracking at Ueno Zoo in Japan A pygmy hippopotamus rests in some water to help prevent its skin from cracking at Ueno Zoo in Japan
Air pressure under water Air pressure under water
Water caltrop Water caltrop
Claude Monet, Bridge over a Pool of Water Lilies. Claude Monet, Bridge over a Pool of Water Lilies.
Water as a Solvent Water as a Solvent
Video: Regulation of GFR: three methods, autoregulation & autoregulation via myogenic mechanism

For a complete list of videos, visit our video library