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 41 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?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Time Estimates for Specific Office Procedures Cont. Time Estimates for Specific Office Procedures Cont.
Velocity-time Graph Velocity-time Graph
Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ... Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ...
Weak bones cause the spine to collapse over time Weak bones cause the spine to collapse over time
Time Line for Evolution of the Universe Time Line for Evolution of the Universe
Video: Types of energy transfer reactions: oxidation-reduction reactions and ATP generation reactions

For a complete list of videos, visit our video library