question What is the equation for calculating the ideal gas constant R

Chemistry

What is the equation for calculating the ideal gas constant (R)?

A. R = 8.314 J/(mol·K)
B. R = 1.987 cal/(mol·K)
C. R = 0.0821 L·atm/(mol·K)
D. All of the above

The ideal gas constant (R) can be expressed as 8.314 J/(mol·K), 1.987 cal/(mol·K), or 0.0821 L·atm/(mol·K).

The reaction between an alkene and a peracid to form an epoxide is known as:

A. Epoxidation
B. Hydrogenation
C. Hydration
D. Halogenation

Which of the following elements is a noble gas?

A. Neon
B. Sodium
C. Chlorine
D. Potassium

The reaction of an alkene with bromine to form a dihalide is an example of:

A. Halogenation
B. Hydrogenation
C. Dehydration
D. Oxidation

What is the hybridization state of carbon in methane (CH₄)?

A. sp²
B. sp³
C. sp
D. sp⁴

What is the IUPAC name for CH₃CH₂CH₂CH₂CH₃?

A. Pentane
B. Butane
C. Hexane
D. Propane

What is the primary purpose of internal calibration standards in analytical chemistry?

A. Correct for variations in instrumental conditions
B. Enhance sensitivity
C. Provide a reference standard
D. Maintain a constant temperature

What is the term for the arrangement of electrons in an atom's energy levels and sublevels?

A. Electron configuration
B. Atomic structure
C. Electron arrangement
D. Energy distribution

Which analytical technique is suitable for analyzing the elemental composition of solid samples?

A. X-ray fluorescence (XRF)
B. Mass spectrometry (MS)
C. Nuclear magnetic resonance (NMR)
D. Gas chromatography (GC)

What is the IUPAC name for CH₃CH₂COOH?

A. Acetic acid
B. Propionic acid
C. Butanoic acid
D. Ethanoic acid

The technique that measures the change in electrical conductivity of a solution during a chemical reaction is known as:

A. Conductometry
B. Amperometry
C. Coulometry
D. Voltammetry