Which of the following statements regarding water in samples is true?

Essential water can be easily removed from a sample.

When water is absorbed by a sample it is called non-essential water.

Drying ovens are the best method to remove non-essential water for any sample.

Desiccators use a chemical that readily adsorbs water to remove non-essential water.

The size of the sample that is available is important when choosing a method because different methods require different amounts of sample in order to do the analyses.

True

False

Calibration curves are used to establish the relationship between an instrument response and the concentration of the analyte.

True

False

Which of the following are common methods to ensure that analytical results are reliable and true?

Use of blank samples to ensure that any interferences in the sample or in the procedure are acknowledged.

Spiking a sample with a known amount of an analyte allows an analyst to check and confirm that their results are accurate.

Glassware is calibrated to ensure the exact amount of volume they can hold and/or deliver.

All of the above