About Sampling, tick only the incorrect alternative(s). Choose one or more: A) Identifying the nature of a substance present in an unknown sample is called qualitative analysis. The process of measuring how much a constituent is present in a substance is called quantitative analysis. B) A type of error that is known due to procedures that cause a measure to be too large or too small is called a random error, such as reading a scale. C) Sample preparation is the process in which a representative sample is converted into a form suitable for chemical analysis. This usually means dissolving the sample. For a sample with low analyte concentration it may need to be diluted before being analyzed. D) Sampling is the process used to collect a representative sample for analysis. As real abnormals, as regulators are used in real experiments, they also typically prepare some degree of sample preparation to remove substances that do not interfere with the analysis of the desired analyte and possibly to convert the analyte into a suitable form. for analysis. E) The purpose of replicated measures is to assess variability in the analysis and protect against gross error in the analysis of a single aliquot. The uncertainty of a measure is just as important as the measure itself, as it tells us how reliable the measure is.

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Chapter3: Molecules, Moles, And Chemical Equations
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About Sampling, tick only the incorrect alternative(s).

Choose one or more:

A) Identifying the nature of a substance present in an unknown sample is called qualitative analysis. The process of measuring how much a constituent is present in a substance is called quantitative analysis.

B) A type of error that is known due to procedures that cause a measure to be too large or too small is called a random error, such as reading a scale.

C) Sample preparation is the process in which a representative sample is converted into a form suitable for chemical analysis. This usually means dissolving the sample. For a sample with low analyte concentration it may need to be diluted before being analyzed.

D) Sampling is the process used to collect a representative sample for analysis. As real abnormals, as regulators are used in real experiments, they also typically prepare some degree of sample preparation to remove substances that do not interfere with the analysis of the desired analyte and possibly to convert the analyte into a suitable form. for analysis.

E) The purpose of replicated measures is to assess variability in the analysis and protect against gross error in the analysis of a single aliquot. The uncertainty of a measure is just as important as the measure itself, as it tells us how reliable the measure is.

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