Explanation

• The formula 2n^2 helps in determining the maximum number of electrons present in an orbit, where n is the principal quantum number (energy level).
• This formula is based on the Aufbau principle and the Pauli exclusion principle, which describe how electrons occupy energy levels in an atom.

Explanation

• The solubility of a solute substance increases as the temperature of the solvent (liquid) increases.
• This is because heat energy helps to break the bonds between the solute particles and the solvent molecules, allowing more solute to dissolve.

Explanation

• Sublimation process is used for purifying a solid.
• Sublimation is the process where a solid changes directly into a gas without passing through the liquid state.

Explanation

In a gas, the particles are:

• Widely spread out, with no fixed position or arrangement
• Not in a regular pattern, with no repeating structure or order
• Separated by large empty spaces, with no close packing or cohesion

Explanation

The addition of HBr to isobutylene follows Markovnikov's rule, which results in the formation of tert-butyl bromide as the major product.

Explanation

• The correct answer is: Particles have large empty spaces between them.
• This statement is incorrect because particles in liquids have small spaces between them, not large empty spaces.

Explanation

• The Fahrenheit scale has 180 divisions between the freezing point (32°F) and the boiling point (212°F) of water.
• This means that each degree Fahrenheit represents a temperature change of 1/180 of the range between the freezing and boiling points of water.

Explanation

The properties used to describe heat are:

• Hot (high temperature)
• Energy (thermal energy)
• Cold (low temperature)

Explanation

• Carbonic anhydrase is an enzyme that plays a crucial role in aerobic respiration, specifically in the transport of carbon dioxide (CO2) in the blood.
• It helps to regulate the balance of CO2 and bicarbonate ions, which is essential for maintaining proper pH levels in the body.

Explanation

• The removal of the 7th electron from an element of Group VI of the periodic table needs three times more energy than the removal of the 6th electron.
• This is because the ionization energy increases as you remove more electrons from an atom, and this is due to the fact that the electrons that are left behind are more strongly attracted to the positive nucleus.