This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Between sample injections, some students clean a microsyringe with acetone rather than with the ... (Read 57 times)

jparksx

  • Hero Member
  • *****
  • Posts: 570
on: Aug 23, 2018

Between sample injections, some students clean a microsyringe with acetone rather than with
  the mixture to be analyzed. Why is this a poor technique?



Question 2

The RT for cyclohexane on a GC instrument is 0.75 min. The temperature of the GC is 70C
  and the gas flow rate is 60 mL/min.
  (a) Would the RT be higher or lower if the column temperature is raised to 100C?
  (b) Would the RT be higher or lower if the flow rate is changed to 30 mL/min?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juicepod

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Aug 23, 2018
Answer to Question 1

Acetone will also exhibit a GC peak

Answer to Question 2

(a) Lower.
(b) Higher.



jparksx

  • Member
  • Posts: 570
Reply 2 on: Aug 23, 2018
Gracias!

mohan

  • Member
  • Posts: 362
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

A small sample of the great diversity of seed sizes and shapes. A small sample of the great diversity of seed sizes and shapes.
Students in class Students in class
Sample Student Externship Form Sample Student Externship Form
Sample prescription for chlorhexidine. Sample prescription for chlorhexidine.
The Clean Development Mechanism allows developed countries The Clean Development Mechanism allows developed countries
Leptin Injections in Mice Leptin Injections in Mice
Video: Introduction to Macular Degeneration

For a complete list of videos, visit our video library