question Which analytical technique is commonly used for identifying and quantifying elements in a sample

Chemistry

Which analytical technique is commonly used for identifying and quantifying elements in a sample?

A. Atomic absorption spectroscopy
B. Infrared spectroscopy
C. Nuclear magnetic resonance
D. Gas chromatography

Atomic absorption spectroscopy is commonly used for identifying and quantifying elements in a sample.

What is the primary function of the Golgi apparatus in eukaryotic cells?

A. Modifying and packaging proteins for secretion
B. Synthesizing lipids
C. Producing ATP
D. Storing genetic information

Which class of biomolecules includes triglycerides, phospholipids, and steroids?

A. Lipids
B. Proteins
C. Carbohydrates
D. Nucleic acids

The reaction of an alkene with hydrogen halide in the presence of peroxide is known as:

A. Hydrogenation
B. Halogenation
C. Hydration
D. Markovnikov addition

In gas chromatography, separation is based on differences in:

A. Vapor pressure
B. Boiling point
C. Density
D. Molecular weight

Which of the following is an example of a geminal diol?

A. Ethylene glycol
B. Propylene glycol
C. Glycerol
D. Butane-1,3-diol

The relationship between heat transfer (Q), mass (m), specific heat (C), and temperature change (ΔT) is given by:

A. Q = mcΔT
B. Q = mΔT/C
C. Q = C/mΔT
D. Q = ΔT/mC

The element with the chemical symbol Ag is:

A. Silver
B. Silicon
C. Sodium
D. Sulfur

What is the primary function of DNA polymerase during DNA replication?

A. Synthesizing a new strand of DNA
B. Reading the RNA code
C. Breaking down DNA into nucleotides
D. Repairing damaged DNA

What is the shape of a molecule with a tetrahedral electron domain geometry?

A. Tetrahedral
B. Linear
C. Trigonal planar
D. Octahedral

Which ion is responsible for the acidic nature of a solution?

A. H⁺ (Hydrogen ion)
B. OH⁻ (Hydroxide ion)
C. Cl⁻ (Chloride ion)
D. Na⁺ (Sodium ion)