« previous next »

Author Question: If a cold front moves into a moist region, A) humidity will likely decrease. B) the chances of ... (Read 16 times)

frankwu

  • Hero Member
  • *****
  • Posts: 549
on: Jul 16, 2018
If a cold front moves into a moist region,
 
  A) humidity will likely decrease.
  B) the chances of precipitation will increase.
  C) evaporation will increase.
  D) photosynthesis will increase.

Question 2

Consider how easily halite (NaCl) dissolves in water. Why does quartz not dissolve readily in water?
 
  What will be an ideal response?


kiamars2010

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 16, 2018
Answer to Question 1

B

Answer to Question 2

Halite dissolves relatively easily because it forms from ionic bonds of elements that only have a charge value of one. Weak attraction results from lopsided distribution of electrons; positive ends of the water molecule (H+) are attracted to and dislodge the anions (Cl-) and the negative ends of the water molecule (O-) are attracted to and dislodge the cations (Na+). Water keeps the ions separated. In contrast, bonds in quartz are mostly covalent.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Medication errors are three times higher among children and infants than with adults.

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.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

The Spinal Cord, The Spinal Cord and Spinal Nerves; Close-up of the Caudal Region of the Spinal Nerv The Spinal Cord, The Spinal Cord and Spinal Nerves; Close-up of the Caudal Region of the Spinal Nerv
front muscle figure front muscle figure
Cold front Cold front
The ORPR region The ORPR region
A gradient of bicoid mRNA (blue stain) as concentrated in anterior region A gradient of bicoid mRNA (blue stain) as concentrated in anterior region
CAP–cAMP complex binding to the CAP binding region CAP–cAMP complex binding to the CAP binding region
Video: Oral Hygiene & Braces Animation

For a complete list of videos, visit our video library