Question
find out which artificial colourings s were present in two soft drinks . Her results are shown below . What term is used to describe substance A? Enter your answer
Answer
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Esme
Expert · Tutor for 3 years
Answer
A. ChromatogramB. CentrifugeC. DistillationD. Mobile Phase
Explanation
Substance A seems to reveal results which are usually expected from chromatography experiments. Chromatography is a laboratory technique for the separation of a mixture. It uses a medium (stationary phase) through which a mixture is passed (mobile phase). Differently coloured components will travel through the stationary phase at different speeds allowing for their separation; this could cause presence of artificial colors in items such as soft drinks to be determined – just as the experiment as set out in the problem statement.A Chromatogram is the visual output of the chromatography. Various substances present in the sample, on separation, show up as individual bands in the chromatogram. Band's intensity, size etc. give us concrete information about the amount and NIC of that compound.Therefore, based on the given advanced description, the answer would be an A, "Chromatogram".A centrifuge is used for the process of centrifugation which involves rotation in order to separate fluids of different densities (or liquids from solids). This doesn’t seem directly applicable to this particular context.Distillation is a popular technique used for the purification of liquids which capitalizes on making use of their differing boiling points. Yet, it can’t apply in this argument. Lastly, the mobile phase refers to the phase that moves in chromatography. This seems certainly almost there, yet the only meaningful outcome here could be a Chromatogram which represents material "A".【Answer】: A. Chromatogram.