Notice: Payments for answers will end 4/10/2017. Click for more info.
You have new items in your feed. Click to view.
Question and answer
Q: 2. What is the purpose of using the cobalt glass in the identification of sodium and potassium?
A: An intense yellow flame confirms the presence of sodium ions. [ The presence of potassium ions is indicated by a pale violet flame which appears reddish-violet through cobalt glass. In a mixture that may contain Na and K salts, it could be difficult to see the pale violet flame of potassium through the intense yellow flame of sodium. For identification of potassium, it is necessary to view the
flame through an optical filter to eliminate as far as possible the colors due to sodium, calcium, and other interfering ions. ]
Expert answered|Tachek|Points 50|
Question
Asked 1/14/2013 6:29:49 AM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
What division of Islam believes that only a relative of Muhammad is qualified to be a caliph? A. Sunni B. Sufi C. Shi’a D. Fatimid
Question
Expert Answered
Updated 109 days ago|12/30/2017 3:47:44 PM
1 Answer/Comment
Shia or Shiite believes that only a relative of Muhammad is qualified to be a caliph.
Added 109 days ago|12/30/2017 3:47:44 PM
This answer has been confirmed as correct and helpful.
Confirmed by Janet17 [12/30/2017 5:13:55 PM]
26,801,987 questions answered
Popular Conversations
What does throttle mean?
4/16/2018 10:25:30 AM| 3 Answers
What is the best way to control Type II diabetes?
Weegy: Type 1 diabetes (previously known as insulin-dependent diabetes) and Type 2 diabetes (previously known as ...
4/10/2018 6:12:01 AM| 2 Answers
Error 401- Unauthorized
4/13/2018 4:59:54 AM| 2 Answers
What's one way we can check our answer to 2 ×10 = 20? A. 2 ÷ ...
Weegy: A throttle body is part of the air intake system that helps control the amount of air that gets into the engine. ...
4/13/2018 7:46:31 AM| 2 Answers
The science of the creation of maps and charts is called ...
Weegy: The science of the creation of maps and charts is called cartography. User: Which of the following would ...
4/13/2018 8:36:16 AM| 2 Answers
Third-largest ocean
4/9/2018 9:00:00 AM| 1 Answers
Weegy Stuff
S
R
L
R
Points 150 [Total 288] Ratings 0 Comments 20 Invitations 13 Offline
S
P
L
P
P
P
P
Points 144 [Total 570] Ratings 0 Comments 144 Invitations 0 Offline
S
1
L
L
P
R
P
L
P
P
R
P
R
P
R
Points 132 [Total 12935] Ratings 0 Comments 122 Invitations 1 Offline
S
Points 50 [Total 50] Ratings 0 Comments 0 Invitations 5 Offline
S
P
L
Points 35 [Total 126] Ratings 0 Comments 35 Invitations 0 Offline
S
Points 11 [Total 11] Ratings 0 Comments 11 Invitations 0 Offline
S
Points 10 [Total 15] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
Points 6 [Total 6] Ratings 0 Comments 6 Invitations 0 Offline
S
Points 3 [Total 3] Ratings 0 Comments 3 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.