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pashok25 [27]
3 years ago
13

Why must the spectrophotometer cell be removed from the instrument between readings?

Chemistry
1 answer:
Natali [406]3 years ago
5 0

Spectrophotometric cell or a cuvette is made of quartz for UV spectrophotometers. These cuvettes are used as sample holders for the spectrophotometric determination of the analytes. The material that makes up the cuvette and the condition of the cuvette is to be taken care of in order to avoid erroneous absorbance readings. The sample holder or the cuvette must be removed from the spectrophotometer in between two successive readings. This is to ensure that the light sensing detector of the instrument is not affected.

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How does the modern periodic table arrange elements?
Norma-Jean [14]
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7 0
3 years ago
Read 2 more answers
An atom of oxygen has atomic of 8 and a mass number of 18. How many of each type of subatomic particle doe it contain?
Tju [1.3M]
An atom of Oxygen. Contains:

Protons = 8
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7 0
3 years ago
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Evgesh-ka [11]

Answer:

See below

Explanation:

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From the equation, 5 times as many moles of OXYGEN (O2)are required

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Using oxygen as 21 percent of air means that

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5 0
2 years ago
Equilibrium describes the balance that results from a forward and reverse reaction proceeding at equal rates. Since reaction rat
Delvig [45]

Answer:

b) the reaction proceeds to a new equilibrium in the direction that offsets the change.

Explanation:

According to Le Chatelier's principle, when a system experiences a constraint such as a change in pressure, temperature or concentration, the system will readjust itself in order to annul the constraint.

This simply means that when temperature, concentration or pressure is changed, a new equilibrium position is reached in order to offset the changes in the system.

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dybincka [34]

Answer:

-269.75 degrees Celsius

Explanation:

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3 years ago
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