Explanation

Polymers that soften on heating and harden when cooled are called thermoplastics.

Explanation

The concentration of A after 29 seconds is approximately 0.15 M.

Explanation

The combination that will produce a precipitate is NaOH (aq) and Fe(NO3)3 (aq).

Explanation

• In a process at constant volume, the change in internal energy (ΔE) is equal to the heat added to the system (q).
• Therefore, at constant volume, ΔE = q.

Explanation

Illusory means خیالی

Real means اصلی

Explanation

The catalyst in Friedel-Crafts alkylation is AlCl3 (aluminum chloride).

Explanation

A seamstress is a woman who sews clothes for a living.

Explanation

Carboxylic acids with long hydrocarbon chains are called fatty acids.

Explanation

The oxidation of secondary alcohols produces ketones.

Explanation

When ultraviolet radiation reacts with chlorofluorocarbons (CFCs), it results in the breakdown of the ozone layer by releasing chlorine radicals Cl° and C° F2Cl.