This topic contains a solution. Click here to go to the answer

Author Question: Choose the reaction that illustrates Hf for Ca(NO3)2. A) Ca(s) + N2(g) + 3O2(g) Ca(NO3)2(s) B) ... (Read 50 times)

jwb375

  • Hero Member
  • *****
  • Posts: 540
Choose the reaction that illustrates Hf for Ca(NO3)2.
 
  A) Ca(s) + N2(g) + 3O2(g)  Ca(NO3)2(s)
  B) Ca2+(aq) + 2 NO3-(aq)  Ca(NO3)2(aq)
  C) Ca(s) + 2 N(g) + 6 O(g)  Ca(NO3)2(s)
  D) Ca(NO3)2(aq)  Ca2+(aq) + 2 NO3-(aq)
  E) Ca(NO3)2(s)  Ca(s) + N2(g) + 3O2(g)

Question 2

How would the concentration change if a 1.0 L flask of 1.0 M NaCl were left uncapped on a laboratory bench for several days. Why?
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Pariscourtney

  • Sr. Member
  • ****
  • Posts: 352
Answer to Question 1

A

Answer to Question 2

The concentration would slowly increase as water from the solution evaporated. This is because the amount of NaCl in the flask would remain constant while the amount of water decreases.




jwb375

  • Member
  • Posts: 540
Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it


hramirez205

  • Member
  • Posts: 345
Reply 3 on: Yesterday
Wow, this really help

 

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.

For a complete list of videos, visit our video library