question The chemical equation 2H O 2H O represents a

Chemistry

The chemical equation 2H₂O → 2H₂ + O₂ represents a:

A. Decomposition
B. Synthesis
C. Combustion
D. Redox

The given equation represents a decomposition reaction breaking down water into hydrogen and oxygen.

Which law states that the pressure of a gas is directly proportional to its absolute temperature at constant volume?

A. Gay-Lussac's law
B. Boyle's law
C. Charles's law
D. Dalton's law

What is the standard Gibbs free energy change (ΔG°) at equilibrium for a chemical reaction?

A. 0 kJ/mol
B. 1 kJ/mol
C. -1 kJ/mol
D. Depends on the reaction

Which method involves the use of X-rays to determine the crystal structure of a sample?

A. X-ray diffraction (XRD)
B. X-ray fluorescence (XRF)
C. X-ray photoelectron spectroscopy (XPS)
D. X-ray absorption spectroscopy

What is the IUPAC name for CH₃CH₂COCH₂CH₃?

A. Butanone
B. Pentanone
C. Hexanone
D. Propanone

What is the function of RNA interference (RNAi) in cells?

A. Regulating gene expression
B. Catalyzing chemical reactions
C. Storing genetic information
D. Facilitating cellular respiration

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

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

Which sublevel is associated with the principal quantum number n = 3?

A. s
B. p
C. d
D. f

Which of the following is a property of strong acids?

A. Completely ionize in water
B. Partially ionize in water
C. Form a weak electrolyte
D. Have a pH above 7

What is the IUPAC name for CH₃CH₂CH₂COOCH₃?

A. Methyl propanoate
B. Ethyl methanoate
C. Propyl ethanoate
D. Ethyl propanoate

Which term describes the ability of an analytical method to selectively detect a specific analyte in the presence of other substances?

A. Selectivity
B. Sensitivity
C. Specificity
D. Linearity