« previous next »

Author Question: Which of the following statements about He is false? a. It is an inert gas. b. It is odorless. ... (Read 21 times)

mydiamond

  • Hero Member
  • *****
  • Posts: 804
on: Jul 16, 2018
Which of the following statements about He is false?
 
  a. It is an inert gas.
  b. It is odorless.
  c. It is nonflammable.
  d. It is heavier than air.

Question 2

Which of the following statements about CO2 are true? 1. It does not support animal life. 2. It is a flammable gas. 3. It is odorless and colorless. 4. It is heavier than air.
 
  a. 1 and 3 only
  b. 2 and 3 only
  c. 3 and 4 only
  d. 1, 3, and 4 only


Cnarkel

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
Helium is second only to hydrogen as the lightest of all gases; it has a density at STPD of 0.1785 g/L. Helium is odorless, tasteless, nonflammable, and chemically and physiologically inert.

Answer to Question 2

ANS: D
At STPD, CO2 is a colorless and odorless gas with a specific gravity of 1.52 (approximately 1.5 times heavier than air). Carbon dioxide does not support combustion or maintain animal life.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

There are more bacteria in your mouth than there are people in the world.

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.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

The Sun in false-color ultraviolet image The Sun in false-color ultraviolet image
A 1998 false-colour near-infrared image of Uranus showing cloud bands, rings, and moons obtained by A 1998 false-colour near-infrared image of Uranus showing cloud bands, rings, and moons obtained by
False Solomons Seal False Solomons Seal
Which of the following statements is true of linkage? Which of the following statements is true of linkage?
How to convert verbal statements into algebraic equations (Part 4) How to convert verbal statements into algebraic equations (Part 4)
Anterosuperior view of false pelvis (pink) Anterosuperior view of false pelvis (pink)
Video: Hormonal feedback loop components & Glucagon (glycogenolysis and gluconeogenesis)

For a complete list of videos, visit our video library