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

Author Question: Suppose that a particular chemical substance A is pure contains no impurities, and that it can be ... (Read 33 times)

ARLKQ

  • Hero Member
  • *****
  • Posts: 571
on: Jul 29, 2018
Suppose that a particular chemical substance A is pure contains no impurities, and that it can be chemically decomposed into two other pure materials B and C. What conclusion can be draw from this?
 
  A) B and C must be elements.
  B) A must be a chemical compound.
  C) A must be an element.
  D) B and C must be chemical compounds.
  E) Nonsense--it is impossible to decompose a pure substance into two other materials.

Question 2

Which of the following is one of the drawbacks of the automobile engine?
 
  A) CO2 is injected into the atmosphere
  B) CO is injected into the atmosphere
  C) the internal combustion engine has none of these drawbacks
  D) the internal combustion engine has all of these drawbacks
  E) low efficiency


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bd5255

  • Sr. Member
  • ****
  • Posts: 386
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


ARLKQ

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

6ana001

  • Member
  • Posts: 311
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

Bonding Partners and Energy May Change in a Chemical Reaction Bonding Partners and Energy May Change in a Chemical Reaction
Pure Alexia Pure Alexia
Chemical, Biochemical, and Organic Sedimentary Rocks Chemical, Biochemical, and Organic Sedimentary Rocks
A chemical reaction is run in which 447 Joules of work is done by the system and A chemical reaction is run in which 447 Joules of work is done by the system and
Chemical structures and designations of the 20 amino acids Chemical structures and designations of the 20 amino acids
The Ames test for potential mutagenicity of chemical compounds The Ames test for potential mutagenicity of chemical compounds
Video: Types of Shock (Part 2 of 2)

For a complete list of videos, visit our video library