« previous next »

Author Question: A commonly used abrasive that is NOT used in toothpaste is A) sugar. B) calcium carbonate. C) ... (Read 26 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?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Drugs Commonly Prescribed According to Classification Drugs Commonly Prescribed According to Classification
Using radiogenic strontium isotopes in carbonate shells as a proxy for orogeny Using radiogenic strontium isotopes in carbonate shells as a proxy for orogeny
Sugar: Finding Added Sugars on the Label A food Sugar: Finding Added Sugars on the Label A food
Growing Interest in Sugar-Free Foods and Beverages Growing Interest in Sugar-Free Foods and Beverages
Eating calcium-rich foods daily assists with bone health, muscle contraction, and blood clotting Eating calcium-rich foods daily assists with bone health, muscle contraction, and blood clotting
The bacterium Escherichia coli is commonly referred to as E. coli. Seen here with multiple flagella The bacterium Escherichia coli is commonly referred to as E. coli. Seen here with multiple flagella
Video: Otitis Media

For a complete list of videos, visit our video library