Author Question: In what ways are the roots of a plant like an ion-exchanger used to purify hard water? A) The ... (Read 112 times)

NguyenJ

  • Hero Member
  • *****
  • Posts: 516
In what ways are the roots of a plant like an ion-exchanger used to purify hard water?
 
  A) The roots release ions, which exchange with the mineral ions in the soil.
  B) The plant roots purify water.
  C) The plant roots trap ions in the water and store them until recharged.
  D) all of the above
  E) none of the above

Question 2

Many solvents expand to occupy greater volumes with increasing temperature. What happens to the concentration of a solution made with such a solvent as its temperature is increased?
 
  A) Since concentration depends on how much mass is dissolved in a given volume, as the volume increases, the concentration decreases.
  B) The concentration of a solution increases as the solute fits into the new spaces between the molecules.
  C) Since it has a greater ability to dissolve more solute at a higher temperature, its concentration has decreased.
  D) Since it has a greater ability to dissolve more solute at a higher temperature, its concentration has increased.



reversalruiz

  • Sr. Member
  • ****
  • Posts: 327
Answer to Question 1

A

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

For a complete list of videos, visit our video library