Explanation

Explanation

Explanation

To calculate the work done during the expansion of an ideal gas, we can use the formula for work done by a gas in an isobaric (constant pressure) process:

Explanation

The breakdown of glucose by microorganisms, such as yeast, is called alcoholic fermentation.

Explanation

Steroids are lipids that do not contain fatty acids.

They have a structure composed of four fused carbon rings (steroid nucleus) and are involved in various biological functions, such as hormones (e.g., cholesterol, testosterone, and estrogen).

Other lipids like neutral lipids, phosphatidic acids, and waxes do contain fatty acids in their structures.

Explanation

When a car crashes into a tree, momentum is generally conserved in an isolated system (assuming no external forces).

Still, kinetic energy is not fully conserved due to energy being converted into other forms like sound, heat, and deformation of the car.

Explanation

Homolytic fission results in the formation of alkyl free radicals, where each atom retains one of the bonding electrons.

Explanation

Lithium (Li) forms only a normal oxide, Li₂O, when reacting with oxygen.

Other alkali metals (like Na, K) form peroxides and superoxides.

Explanation

Lattice energy is calculated using the Born-Haber cycle, considering the heat of sublimation, dissociation, ionization, electron affinity, and heat of formation.

After applying the Born-Haber cycle, the lattice energy of KBr is -679.3 kJ/mol.

Explanation

 in every instant of time, the wavelength associated with a freely falling body decreases.

This is because the de Broglie wavelength 

λ of a particle is inversely proportional to its momentum:

(𝜆=ℎ/𝑝 ).

where:

• $h$ is Planck's constant,
• $p$ is the momentum of the particle.