Analytical Chemistry: The Nature of Analytical Process

The amount of mercury in the blood is usually lower than 10 μg/L. This constituent can be considered as which of type?

• trace constituent

• minor constituent

• major constituent

• ultratrace constituent

A 0.005-g sample of a rock is to be analyzed, and iron is to be determined at the ppm level. Determine the type of analysis and type of constituent.

What is the type of constituent?

• ultra-trace constituent

• trace constituent

• major constituent

• minor constituent

This assures the reliability in the data

• sample drying

• sample processing

• sample preparation

• sample replication

This branch of chemistry deals with instrumentation and methods to quantify matter

• Physical chemistry

• Organic chemistry

• Biochemistry

• Analytical chemistry

Joshua, a laboratory analyst for a mining company, determined that copper is 0.51% of the ore that he is analyzing. Based on these results, copper in that ore is a/n

• minor constituent

• trace constituent

• major constituent

• ultratrace constituent

The following is not a possibility when a liquid sample was left uncovered?

• it can be thrown away

• it can absorb moisture

• it can be contaminated

• it can evaporate

A 0.005-g sample of a rock is to be analyzed, and iron is to be determined at the ppm level. Determine the type of analysis and type of constituent.

What is the type of analysis?

• ultramicro analysis

• macro analysis

• semimicro analysis

• micro analysis

The exact mass of the analyte in a given experiment must have to be determined. What quantitative analytical method should be used?

• Gravimetric

• Electroanalytical

• Spectroscopic

• Volumetric

This method is to be used when exploring the the interaction between electromagnetic radiation and analyte atoms or molecules or the emission of radiation by analytes.

• Spectroscopic

• Gravimetric

• Volumetric

• Electroanalytical

This method is to be used when measuring the electrical properties such as potential, current, resistance, and quantity of electrical charge.

• Electroanalytical

• Gravimetric

• Spectroscopic

• Volumetric