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

Author Question: Passing arsenic contaminated water through a long pipe filled with sand and iron powder leads to ... (Read 36 times)

ARLKQ

  • Hero Member
  • *****
  • Posts: 571
Passing arsenic contaminated water through a long pipe filled with sand and iron powder leads to removal of the arsenic by
 
  A) a physical change.
  B) an oxidation-reduction reaction.
  C) ion exchange.
  D) filtering out the suspended arsenic particles.
  E) only a and b

Question 2

Treating water with chlorine or ozone during water purification is an example of
 
  A) a physical change.
  B) a chemical reaction.
  C) ion exchange.
  D) a solid dissolving in a liquid.
  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

mistyjohnson

  • Sr. Member
  • ****
  • Posts: 331
Answer to Question 1

Answer: B

Answer to Question 2

Answer: B




ARLKQ

  • Member
  • Posts: 571
Reply 2 on: Jul 29, 2018
Excellent


mammy1697

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

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?

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.

For a complete list of videos, visit our video library