What are two types of errors that could have occurred during this experiment, and how could they have affected the salt solution? What could be done to avoid them?
a) Measurement error, contamination; use calibrated instruments and maintain sterile conditions.
b) Sampling error, evaporation; ensure representative sampling and minimize exposure to air.
c) Procedural error, equipment malfunction; follow standardized procedures and regularly maintain equipment.
d) Human error, misinterpretation; provide proper training and supervision to personnel