« previous next »

Author Question: If a cold front moves into a moist region, A) humidity will likely decrease. B) the chances of ... (Read 71 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?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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.

Jacob, Monod, and Pardee's hypothesis for the function of the lacI region Jacob, Monod, and Pardee's hypothesis for the function of the lacI region
PCR primers detect and amplify a specific genomic region PCR primers detect and amplify a specific genomic region
A star-forming region in the Large Magellanic Cloud. A star-forming region in the Large Magellanic Cloud.
front muscle figure front muscle figure
SPE densitometry showing an M spike in the gamma region. SPE densitometry showing an M spike in the gamma region.
Ayurvedic massage. Pressing the ansa marma on the front and back of the shoulders with recipient ... Ayurvedic massage. Pressing the ansa marma on the front and back of the shoulders with recipient ...
Video: Pasteur's Experiment

For a complete list of videos, visit our video library