rev. orm ws1-511000 T 08:17 PM 3/6/2017 tes Print Lcalculator Periodic Table sti
ID: 494037 • Letter: R
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rev. orm ws1-511000 T 08:17 PM 3/6/2017 tes Print Lcalculator Periodic Table stion 27 of 39 incorrect Sapling Learning A spectrophotometer measures the transmittance or the absorbanoe, or both, of a particular wavelength of light after it has passed through a liquid sample. Before the transmittance or absorbance of the sampl is measured, cuvette only with solvent, called the blank, placed in the an measured. Select the reason that, after the blank is the cuvette must be placed in the spectrophotometer in the same orientation each time that it is used. O The spectrophotometer will break if the cuvette position is changed during the experiment. O The transmittance of the liquid must be measured in the same place each time. O The cuvette will only fit into the spectrophotometer in one orientation. O The transmittance of the cuvette must be measured in the same place each time.Explanation / Answer
The cuvette will have different transmitting capacities in different directions. To keep the transmittance through the cuvette, it is required to keep cuvette in one specified direction through out the experiment.
The best option is
the transmittance of the cuvette must be measured in same place each time.
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