« previous next »

Author Question: Why do water drops bead on a freshly waxed surface? A) The wax, which is nonpolar, pushes the ... (Read 59 times)

soccerdreamer_17

  • Hero Member
  • *****
  • Posts: 552
on: Aug 27, 2018
Why do water drops bead on a freshly waxed surface?
 
  A) The wax, which is nonpolar, pushes the water into a bead shape.
  B) The strong cohesive forces between water molecules attract each other and the result is a sphere, which is squashed down into a bead by the force of gravity.
  C) Water's cohesive forces between molecules results in a spherical shape and prevents the water droplet from spreading out evenly over the wax.
  D) A freshly waxed surface carries a small electrical charge, which repel the outer electrons on the water molecules.

Question 2

If you mix a typical aluminum ion (Al, atomic no. = 13 ) with a typical oxygen ion (O, atomic no. = 8 ), what compound is formed?
 
  A) Al2O3
  B) Al3O2
  C) Al13O8
  D) Al3O
  E) Al2O2


Jsherida

  • Sr. Member
  • ****
  • Posts: 314
Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

soccerdreamer_17

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Aug 27, 2018
Both answers were spot on, thank you once again


Jsherida

  • Sr. Member
  • ****
  • Posts: 314
Reply #3 on: Aug 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Pili extending from the surface of Proteus mirabilis. Pili extending from the surface of Proteus mirabilis.
Examples of structures in which extensive surface area is important for function. Examples of structures in which extensive surface area is important for function.
Directional selection pushes a phenotype one way or another. Directional selection pushes a phenotype one way or another.
Taste receptors, taste buds, and papillae on the surface of the tongue. Two sizes of papillae are ... Taste receptors, taste buds, and papillae on the surface of the tongue. Two sizes of papillae are ...
Different bodies of water have contrasting physical properties Different bodies of water have contrasting physical properties
Water forms spheres of hydration Water forms spheres of hydration
Video: Chronology of leptin research (A history of leptin research)

For a complete list of videos, visit our video library