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

Author Question: If an experiment calls for adding approximately 1 mL of a given solvent, which of these three ... (Read 43 times)

nautica902

  • Hero Member
  • *****
  • Posts: 591
on: Aug 23, 2018
If an experiment calls for adding approximately 1 mL of a given solvent, which of these three methods would you recommend? Explain your choice. a. Measure the solvent using a graduated cylinder. b. Weigh the solvent on a balance. c. Estimate the volume using a Pasteur pipette.

Question 2

If an experiment calls for adding exactly 3.1 mL of a given solvent, which of these three methods would you recommend? Explain your choice. a. Measure the solvent using a graduated cylinder. b. Weigh the solvent on a balance. c. Estimate the volume using a Pasteur pipette.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jmfn03

  • Sr. Member
  • ****
  • Posts: 323
Reply #1 on: Aug 23, 2018
Answer to Question 1

Because this experiment calls for an approximate volume of solvent, eyeballing with a Pasteur pipette (c) would be suitable.

Answer to Question 2

The most accurate method for measuring a liquid is to weigh it (answer b). It is necessary to know the density when the amount of liquid is given as a volume. Most graduated cylinders are graduated to 0.2 mL increments and therefore, if accuracy is important, method (a) would not be suitable. Eyeballing the volume (c) would be the least accurate method.


nautica902

  • Member
  • Posts: 591
Reply 2 on: Aug 23, 2018
Gracias!

scottmt

  • Member
  • Posts: 322
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

Medication errors are three times higher among children and infants than with adults.

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?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

An electron micrograph from an experiment demonstrating the function of a tight junction An electron micrograph from an experiment demonstrating the function of a tight junction
Noll's DNase-I digestion experiment, which verified the beads-on-a-string model of DNA compacti Noll's DNase-I digestion experiment, which verified the beads-on-a-string model of DNA compacti
A laboratory experiment verified evaporative cooling by the cicada, Diceroprocta apache A laboratory experiment verified evaporative cooling by the cicada, Diceroprocta apache
In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai
Experimental Apparatus for Fluidization Experiment Experimental Apparatus for Fluidization Experiment
Frederick Griffith’s experiment identifying a ″transformation factor″ responsible for heredity Frederick Griffith’s experiment identifying a ″transformation factor″ responsible for heredity
Video: Secondary Active Transport

For a complete list of videos, visit our video library