AP Chemistry aid » Laboratory methods and evaluation » laboratory Equipment and also Procedure » Laboratory equipment

You are trying to create a new chemical structure. You need exactly 9mL of phenyllithium for your following reaction. Which measuring device would it is in the most accurate come measure the end that liquid?


Explanation:

When measuring any liquid in the lab, a volumetric pipet or flask is always going to it is in the many accurate. This makes the 9mL volumetric pipet the best choice.

You are watching: What piece of lab equipment is used to measure mass

There is no such thing as a 9mL watch glass. Despite a 10mL syringe and graduated cylinder would be fairly accurate, the 9mL volumetric pipet is an ext accurate, and remember the inquiry asked because that the best out the the prize choices. A beaker is really inaccurate and should just be used to carry solutions, no to measure up them.


An experiment calls for you to titrate a 

*
 solution that
*
 with a solution of
*
 of unknown concentration. The equipment of
*
 is held in one Erlenmeyer flask. What item of laboratory devices should you usage to carry out the
*
 solution?


Explanation:

In a titration, you have to use a buret to administer the

*
 solution into the
*
 solution. A buret gives you the many accuracy in to run the titration as you deserve to dispense the systems drops in ~ a time. The buret will certainly also enable you to accurately determine the volume the
*
 needed to complete the titration. A watch glass and also spatula would be unreasonable for this situation since you are managing liquids. Pouring from a graduate cylinder would not be exact enough and the titration outcomes would be topic to many error. A volumetric pipet will not allow you to store track of the volume required to finish the titration.


Report one Error

Example question #3 : Laboratory equipment


An experiment calls for measuring 

*
 of a systems in a i graduated cylinder. How have to the graduated cylinder it is in read?


Possible Answers:

Crouch down till your head is on the exact same level as the table top, climate look come make sure the bottom of the meniscus is at 

*


Hold the graduated cylinder so the meniscus is slightly below eye level, climate make sure the bottom that the meniscus is at 

*


Hold the graduated cylinder for this reason the meniscus is in ~ eye level, then make sure the bottom that the meniscus is at 


Hold the graduated cylinder for this reason the meniscus is slightly above eye level, then make sure the bottom that the meniscus is at 

*


Correct answer:

Hold the i graduated cylinder for this reason the meniscus is at eye level, then make sure the bottom that the meniscus is at 


Explanation:

In order for specific reading that a graduated cylinder, hold the graduated cylinder in ~ eye level climate make certain the bottom that the meniscus is at the wanted volume. Having actually the i graduated cylinder slightly below eye level will an outcome in readings that space higher than lock are supposed to be. Having actually the i graduated cylinder slightly above eye level will an outcome in readings the are reduced than castle are claimed to be. Never location your head ~ above the exact same level as the table to read a i graduated cylinder. If the graduated cylinder tips end for any type of reason, you will certainly splash the solution held within on her face.


Report an Error

Example question #4 : Laboratory devices


While conducting an experiment, you should measure exactly 

*
 of a sulfuric mountain solution. Which item of devices should friend use?


Possible Answers:

Graduated cylinder


*
 beaker


 volumetric pipette


Mohr pipette


Correct answer:

 volumetric pipette


Explanation:

A volumetric pipette is made to dispense a specific amount the liquid an extremely accurately. The Mohr pipette, beaker, and graduate cylinder will not measure up a details amount that liquid together accurately together the volumetric pipette.


Report an Error

Example inquiry #5 : Laboratory tools


While conducting one experiment, girlfriend are forced to measure the end exactly 

*
 of potassium hydrogen phthalate. What need to you usage to measure the end the correct amount?


Possible Answers:

Triple beam balance


Centigram balance


Erlenmeyer flask


Analytical balance


Correct answer:

Analytical balance


Explanation:

Potassium hydrogen phthalate is a solid in ~ room temperature, for this reason we can use a balance and also a weigh boat or sweet paper. Once measuring specific amounts of chemicals, an analysis balance will be able to provide the most accurate reading of mass. 


Report one Error

Example concern #6 : Laboratory tools


For one experiment, you are required to warm a sample that a hard to very high temperatures. What piece of laboratory equipment should you use to heat the solid?


Possible Answers:

Beaker


Erlenmeyer flask


Crucible


Test tube


Correct answer:

Crucible


Explanation:

When you require to warm anything approximately high temperatures, you should use a crucible. Glassware is no able to stand up to as much warmth as a crucible.


Report one Error

Example question #7 : Laboratory devices


An experiment needs you to mix a systems of 

*
 with a solution of 
*
 and then observe the reaction. What have to the solutions be blended in?


Possible Answers:

A buret


A beaker


A graduated cylinder


A volumetric pipet


Correct answer:

A beaker


Explanation:

A maker is the best selection for mixing these two solutions. Graduated cylinders, burets, and pipets space all supplied to measure certain amounts the solution. Also, stirbars can be easily added to beakers come facilitate the reaction.

See more: What Is The Voltage In A Circuit That Has A Current Of 10.0 Amps And A Resistance Of 28.5 Ohms?


Report an Error

Example question #8 : Laboratory devices


You are compelled to find the absorbance that a specific solution. What item of devices should you use?


Possible Answers:

Chromatography paper


Litmus paper


Spectrophotometer


Analytical balance


Correct answer:

Spectrophotometer


Explanation:

A spectrophotometer need to be used since it is supplied to measure up absorbance at certain wavelengths. An analytical balance is supplied for measure mass. Chromatography document is used to separate various pigments discovered in a chemical. Litmus document is used to identify the pH that a substance.


Report an Error
*

watch AP Chemistry Tutors
Jiajun Certified guardian
Sam Houston State University, Bachelor that Science, Mathematics.
*

watch AP Chemistry Tutors
King Certified tutor
University of southern Florida-Main Campus, current Undergrad Student, Cellular and also Molecular Biology.
*

check out AP Chemistry Tutors
Kevin Certified tutor
Colorado State University-Pueblo, Bachelor the Science, physical Sciences.

All AP Chemistry resources


6 Diagnostic tests 225 exercise Tests inquiry of the job Flashcards find out by concept
Popular Subjects
ISEE Tutors in Washington DC, French Tutors in Washington DC, English Tutors in san Diego, LSAT Tutors in Denver, MCAT Tutors in Dallas fort Worth, ISEE Tutors in Chicago, computer Science Tutors in Dallas fort Worth, act Tutors in Boston, MCAT Tutors in Seattle, biology Tutors in Seattle
Popular process & Classes
GMAT process & class in Atlanta, MCAT courses & great in Atlanta, SAT process & great in Philadelphia, SSAT courses & classes in Los Angeles, SAT process & classes in Chicago, ACT process & classes in Atlanta, ISEE courses & great in mountain Diego, ISEE process & classes in mountain Francisco-Bay Area, SAT courses & class in Dallas ft Worth, ACT process & great in Seattle
Popular check Prep
SSAT check Prep in Boston, SSAT test Prep in Seattle, ISEE test Prep in Phoenix, satellite Test prep in Denver, ISEE test Prep in san Diego, ACT check Prep in Philadelphia, MCAT check Prep in Dallas fort Worth, MCAT check Prep in Houston, GMAT check Prep in Phoenix, GMAT check Prep in Seattle
Report an problem with this concern

If you"ve uncovered an worry with this question, you re welcome let us know. With the help of the neighborhood we can continue to enhance our educational resources.


Do no fill in this field
* her Name:
* concern Description:
DMCA complain

your Infringement notification may be forwarded come the party that made the content obtainable or to 3rd parties such as ChillingEffects.org.

you re welcome follow these steps to file a notice:

girlfriend must encompass the following:

Send your complaint to our designated agent at:

Charles Cohn Varsity Tutors llc 101 S. Hanley Rd, Suite 300 St. Louis, MO 63105