You room trying to develop a new chemical structure. Girlfriend need exactly 9mL of phenyllithium because that your following reaction. I m sorry measuring device would it is in the many accurate to measure out that liquid?
Explanation:
When measuring any liquid in the lab, a volumetric pipet or flask is always going to be the most accurate. This provides the 9mL volumetric pipet the best choice.
You are watching: This is a piece of laboratory equipment used to measure mass in grams.
There is no such point as a 9mL clock glass. Despite a 10mL syringe and graduated cylinder would certainly be quite accurate, the 9mL volumetric pipet is much more accurate, and also remember the inquiry asked because that the best out the the answer choices. A maker is really inaccurate and should only be used to move solutions, not to measure up them.
An experiment calls for you come titrate a





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



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Example concern #5 : activities Equipment and also Procedure
An experiment calls for measuring

Possible Answers:
Hold the i graduated cylinder so the meniscus is slightly below eye level, then make sure the bottom the the meniscus is at

Hold the i graduated cylinder therefore the meniscus is slightly above eye level, climate make certain the bottom of the meniscus is at

Hold the graduated cylinder therefore the meniscus is in ~ eye level, climate make sure the bottom that the meniscus is at
Crouch down until your head is on the same level together the table top, climate look come make sure the bottom that the meniscus is at

Correct answer:
Hold the i graduated cylinder therefore the meniscus is at eye level, climate make certain the bottom of the meniscus is at
Explanation:
In order for an accurate reading of a i graduated cylinder, host the graduated cylinder at eye level climate make certain the bottom that the meniscus is at the wanted volume. Having actually the graduated cylinder slightly listed below eye level will result in readings that are higher than they are supposed to be. Having the i graduated cylinder slightly over eye level will an outcome in readings that are lower than they are supposed to be. Never place your head on the same level together the table to check out a i graduated cylinder. If the graduated cylinder tips end for any reason, you will splash the solution organized within on your face.
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Example inquiry #1 : Laboratory devices
While conducting an experiment, you must measure exactly

Possible Answers:
Mohr pipette

volumetric pipette
Graduated cylinder
Correct answer:
volumetric pipette
Explanation:
A volumetric pipette is made to dispense a certain amount of liquid really accurately. The Mohr pipette, beaker, and graduate cylinder will certainly not measure a details amount that liquid together accurately together the volumetric pipette.
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Example question #2 : Laboratory devices
While conducting one experiment, you are required to measure out exactly

Possible Answers:
Erlenmeyer flask
Triple beam balance
Analytical balance
Centigram balance
Correct answer:
Analytical balance
Explanation:
Potassium hydrogen phthalate is a solid at room temperature, for this reason we deserve to use a balance and a weigh watercraft or weigh paper. Once measuring specific amounts that chemicals, an analysis balance will certainly be maybe to carry out the most accurate analysis of mass.
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Example question #3 : Laboratory tools
For an experiment, girlfriend are compelled to warm a sample the a solid to very high temperatures. What piece that laboratory tools should you usage to heat the solid?
Possible Answers:
Test tube
Erlenmeyer flask
Crucible
Beaker
Correct answer:
Crucible
Explanation:
When you need to warm anything as much as high temperatures, you need to use a crucible. Glassware is no able to stand up to as much heat as a crucible.
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Example concern #4 : Laboratory tools
An experiment requires you to mix a systems of


Possible Answers:
A beaker
A volumetric pipet
A graduated cylinder
A buret
Correct answer:
A beaker
Explanation:
A manufacturer is the best choice for mixing these 2 solutions. I graduated cylinders, burets, and also pipets are all provided to measure certain amounts the solution. Also, stirbars have the right to be easily included to beakers come facilitate the reaction.
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Example concern #5 : Laboratory tools
You are required to uncover the absorbance of a particular solution. What piece of equipment should girlfriend use?
Possible Answers:
Litmus paper
Chromatography paper
Analytical balance
Spectrophotometer
Correct answer:
Spectrophotometer
Explanation:
A spectrophotometer must be used because it is supplied to measure absorbance at details wavelengths. An analysis balance is offered for measure up mass. Chromatography record is offered to separate various pigments found in a chemical. Litmus document is supplied to recognize the pH the a substance.
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