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

Author Question: Why should you use a new Pasteur pipette each time you use a different ... (Read 47 times)

fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
on: Aug 23, 2018
Why should you use a new Pasteur pipette each time you use a different solvent?

Question 2

What is the molecular weight of Compound X given the following information?  The density of Compound X is 1.32 g/mL.  0.520 mL of Compound X is equal to 1.00 mmol.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mcni194

  • Sr. Member
  • ****
  • Posts: 311
Reply #1 on: Aug 23, 2018
Answer to Question 1

You should avoid cross-contaminating one solvent with another. The easiest way to accomplish this is by always using a new Pasteur pipette.

Answer to Question 2

(0.520 mL/1.00 mmol)(1.32 g/mL)(1000 mmol/mol) = 686 g/mol


fasfsadfdsfa

  • Hero Member
  • *****
  • Posts: 554
Reply #2 on: Aug 23, 2018
Both answers were spot on, thank you once again


mcni194

  • Sr. Member
  • ****
  • Posts: 311
Reply #3 on: Aug 23, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Louis Pasteur Louis Pasteur
Median Annual Earnings of Full-Time Workers, by Gender, 1960–2010 Median Annual Earnings of Full-Time Workers, by Gender, 1960–2010
When young infants hold objects for a long period of time they eventually become habituated to them. When young infants hold objects for a long period of time they eventually become habituated to them.
Sample time management planning chart for a massage student. Sample time management planning chart for a massage student.
Time vs. USA Population Exponential Time vs. USA Population Exponential
Insomnia severity vs. time Insomnia severity vs. time
Video: Hemoglobin's affinity with oxygen - carbon dioxide, temperature and bisphosphoglycerate (BPG)

For a complete list of videos, visit our video library