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

Chemistry

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

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

Charles's law states the direct relationship between volume and temperature at constant pressure.

The element with the highest atomic number is:

A. Oganesson
B. Radon
C. Francium
D. Radium

The process of a gas changing directly from a solid to a gas without passing through the liquid phase is known as:

A. Sublimation
B. Deposition
C. Evaporation
D. Condensation

Which scientist proposed the concept of the quantization of energy levels in an atom?

A. Max Planck
B. Niels Bohr
C. Louis de Broglie
D. Werner Heisenberg

In a spontaneous process, the change in Gibbs free energy (ΔG) is:

A. Negative
B. Positive
C. Zero
D. Depends on the process

The enthalpy change in a chemical reaction at constant pressure (ΔH) is related to the internal energy change (ΔU) and pressure change (ΔP) by:

A. ΔH = ΔU + ΔP
B. ΔH = ΔU + PΔV
C. ΔH = ΔU - PΔV
D. ΔH = ΔU/ΔP

The process of a gas changing directly from a gas to a liquid is known as:

A. Condensation
B. Evaporation
C. Sublimation
D. Deposition

What is the name of the principle that states that electrons fill the lowest energy orbitals first?

A. Aufbau principle
B. Pauli exclusion principle
C. Hund's rule
D. Heisenberg uncertainty principle

What is the chemical formula of sulfuric acid?

A. H₂SO₄
B. HCl
C. HNO₃
D. H₃PO₄

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

The chemical equation 2Fe + 3CuSO₄ → 3Cu + 2Fe(SO₄)₃ represents a:

A. Synthesis
B. Decomposition
C. Redox
D. Single displacement