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

Author Question: Electrical analyzers operate by using which of the following? a. Clark electrodes c. Thermal ... (Read 27 times)

DelorasTo

  • Hero Member
  • *****
  • Posts: 548
on: Jul 16, 2018
Electrical analyzers operate by using which of the following?
 
  a. Clark electrodes c. Thermal conductiv-ity
  b. Pauling's principle d. Oxygen-mediated chemical reaction

Question 2

Which of the following happen to the wire within a Wheatstone bridge when it is exposed to oxygen concentrations higher than room air?
 
  1. Its resistance decreases.
  2. Its resistance increases.
  3. It cools down.
  4. It heats up.
  a. 1 and 4 c. 1 and 4
  b. 2 and 3 d. 1 and 3


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fatboyy09

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
Electrical analyzers operate on the principle of thermal conductivity and use an electronic device called a Wheatstone bridge. The Clark electrode is used by the polarographic analyzer. Pauling's principle is used in paramagnetic analyzers, and electrical analyzers use thermal conductivity to analyze oxygen concentration.

Answer to Question 2

ANS: D
The Wheatstone bridge contains two parallel wires that receive current flow from an external power source, usually a battery. One of these wires, which serves as the reference, is exposed to room air. The other wire is located in the sample chamber and is exposed to the gas being ana-lyzed. If the sample gas contains a higher oxygen-to-nitrogen ratio than is present in room air, the sample wire cools and its resistance decreases, because oxygen is a better conductor of heat than nitrogen.


DelorasTo

  • Member
  • Posts: 548
Reply 2 on: Jul 16, 2018
YES! Correct, THANKS for helping me on my review

JaynaD87

  • Member
  • Posts: 368
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

The conduction system of the heart; traces the path of the electrical impulse that stimulates the he The conduction system of the heart; traces the path of the electrical impulse that stimulates the he
Electrical charge of the inner and outer regions of nerve cells Electrical charge of the inner and outer regions of nerve cells
The reference electrodes are shared by the Nernst cell and the pump cell. The reference electrodes are shared by the Nernst cell and the pump cell.
Thermal Layers of the Atmosphere Thermal Layers of the Atmosphere
If before a massage, use the same paper towels to operate door handles and then discard in the ... If before a massage, use the same paper towels to operate door handles and then discard in the ...
The Zones of Injury Commonly Caused by a Thermal Burn The Zones of Injury Commonly Caused by a Thermal Burn
Video: Stretch reflex & Tendon reflex

For a complete list of videos, visit our video library