Author Question: At 1 atm pressure the heat of sublimation of gallium is 277 kJ/mol and the heat of vaporization is ... (Read 82 times)

sarasara

  • Hero Member
  • *****
  • Posts: 521
At 1 atm pressure the heat of sublimation of gallium is 277 kJ/mol and the heat of vaporization is 271 kJ/mol. How much heat is required to melt 1.50 mol of gallium at 1 atm pressure?
 
  A) 6 kJ
  B) 9 kJ
  C) 268 kJ
  D) 271 kJ

Question 2

The formation of a condensation polymer generally involves ________.
 
  A) the addition of a plasticizer
  B) the mixing of sulfur with an addition polymer
  C) the elimination of a small molecule
  D) the vaporization of a plasticizer
  E) the formation of significant crosslinking



trampas

  • Sr. Member
  • ****
  • Posts: 320
Answer to Question 1

B

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

For a complete list of videos, visit our video library