« previous next »

Author Question: A commonly used abrasive that is NOT used in toothpaste is A) sugar. B) calcium carbonate. C) ... (Read 18 times)

tth

  • Hero Member
  • *****
  • Posts: 579
on: Aug 27, 2018
A commonly used abrasive that is NOT used in toothpaste is
 
  A) sugar.
  B) calcium carbonate.
  C) calcium hydrogen phosphate.
  D) calcium pyrophosphate.

Question 2

A gasoline with an octane rating of 90 would give the same performance in a standard test engine as a mixture of
 
  A) 90 isooctane and 10 heptane.
  B) 90 heptane and 10 isooctane.
  C) 90 parts isooctane and 90 parts heptane.
  D) 90 parts isooctane and 90 parts water.


deja

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Aug 27, 2018
Answer to Question 1

A

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Maple sugar tapping. Maple sugar tapping.
Vertebral compression Fractures of the spine (vertebra) can cause severe ”band-like” pain that radia Vertebral compression Fractures of the spine (vertebra) can cause severe ”band-like” pain that radia
Injectable Drugs Commonly Stocked in the Medical Office Injectable Drugs Commonly Stocked in the Medical Office
The regulation of muscle contraction by calcium The regulation of muscle contraction by calcium
A variety of sugar substitutes is available to the consumer A variety of sugar substitutes is available to the consumer
Sugar Sugar
Video: Mendel's Principles of Inheritance (Father of Genetics)

For a complete list of videos, visit our video library