Explanation

A concentrated solution has a large amount of solute compared to the solvent.

Therefore, the solute-to-solvent ratio is high in such a solution.

Explanation

• The nucleus of an atom contains protons and neutrons.
• The nucleus is the central part of an atom.
• Protons have a positive charge.
• Neutrons have no electric charge.
• Electrons are found outside the nucleus
• The nucleus makes up much less than. 01% of the volume of the atom,
• But typically contains more than 99.9% of the mass of the atom.

Explanation

As we move down the alkali metal group, atomic size increases, making the outer electron easier to lose.

This leads to greater reactivity, especially for metals like potassium and cesium.

Explanation

Peptide Bond Hydrolysis: Each peptide bond (linking two amino acids) requires 1 water molecule to break.

4-Amino Acid Chain: A tetrapeptide has 3 peptide bonds, thus needing 3 water molecules for complete hydrolysis.

Example:

Ala-Gly-Val-Ser (4 amino acids) → Broken into 4 separate amino acids using 3 H₂O molecules.

Explanation

The Arrhenius theory (1887) defines:

Acids: Substances that dissociate in water to produce H⁺ ions (protons), such as:

HCl → H⁺ + Cl⁻

Bases: Substances that dissociate in water to produce OH⁻ ions (hydroxide ions), such as:

NaOH → Na⁺ + OH⁻

Explanation

Chemical equilibrium occurs when the forward and reverse reactions occur at the same rate.

At this point, the concentrations of reactants and products remain constant, not necessarily equal.

Explanation

The molar mass of water (H₂O) is 18 grams per mole (H = 1g × 2, O = 16g).

So, 1 mole of water weighs 18 grams.

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)

Explanation

Liquids have smaller intermolecular spaces compared to gases, allowing particles to be more tightly packed.

This closeness results in a higher density in liquids than in gases.

Explanation