« previous next »

Author Question: Which of the following statements about He is false? a. It is an inert gas. b. It is odorless. ... (Read 16 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?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

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-color imagery of the Sun, a G-type main-sequence star, the closest to Earth. False-color imagery of the Sun, a G-type main-sequence star, the closest to Earth.
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 1) How to convert verbal statements into algebraic equations (Part 1)
How to convert verbal statements into algebraic equations (Part 2) How to convert verbal statements into algebraic equations (Part 2)
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

For a complete list of videos, visit our video library