An ideal gas is defined as a gas that has no intermolecular forces and occupies no volume, allowing it to perfectly obey the ideal gas law under all conditions.

According to the kinetic theory, pressure is directly proportional to the average kinetic energy of the gas molecules, which is proportional to the square of their speed.

The Langmuir isotherm assumes that all adsorption sites are identical and have the same energy.

'b' in the Langmuir isotherm represents the equilibrium constant related to the adsorption process.

The significant figures are 7, 8, 9, and 0, totaling 4 significant figures.

In 0.03040, the leading zeros do not count, but the trailing zero after the decimal does. Therefore, there are 4 significant figures.

All digits in 123.45 are significant, giving a total of 5 significant figures.

The significant figures are 1, 5, and the trailing zero after the decimal point.

The number 2500 kg has two significant figures unless specified otherwise (e.g., with a decimal point).

In N2, the 2s orbitals (σ2s and σ*2s) are filled before the 2p orbitals.

π molecular orbitals can accommodate a maximum of 2 electrons, similar to all molecular orbitals.

The σ2s orbital is lower in energy than the π2p and σ2p orbitals in homonuclear diatomic molecules.

The 2s molecular orbitals are lower in energy than the 2p molecular orbitals.

In O2, the highest occupied molecular orbital (HOMO) is π2p.

The highest energy orbital in O2 is σ*2p, which is an antibonding orbital.

s and s orbitals can combine to form a sigma bond.

Sigma bonds are formed by the head-on overlap of s and p orbitals.

The leading zeros are not significant, but the trailing zero is significant. Therefore, it has 4 significant figures.

The significant figures are 7, 8, 9, and the leading zeros are not counted.

Without a decimal point, 2500 has 2 significant figures.

5000 has 1 significant figure unless specified with a decimal point (e.g., 5000.).

The kinetic energy of the emitted electrons is given by KE = hf - φ. If the frequency is doubled, the kinetic energy increases by a factor of four, since KE is proportional to the frequency.

Increasing the intensity of light increases the number of emitted electrons, as intensity is related to the number of photons hitting the surface.

The kinetic energy of the emitted electrons in the photoelectric effect depends on the frequency of the incident light, as per Einstein's photoelectric equation.

The work function is the minimum energy required to remove an electron from the surface of a metal.

The work function is the minimum energy required to remove an electron from the surface of the metal.

At the threshold frequency, the energy of the incident photons is equal to the work function, resulting in emitted electrons having zero kinetic energy.

The excess energy of the photon becomes the kinetic energy of the emitted photoelectrons.

The kinetic energy of emitted electrons remains the same as it depends on the frequency, not intensity.

The kinetic energy of emitted electrons increases linearly with the frequency of the incident light, according to the equation KE = hf - φ.