Explanation

• In the periodic table, a columns is considered to be a groups (also known as a family or column).
• Groups are the vertical columns of elements in the periodic table.

Explanation

• The atomic number (Z) is the number of protons in the nucleus of an atom.
• In this case, the atomic number (Z) is 16, which means the number of protons is 16.

Explanation

The atomic mass (A) is the sum of protons and neutrons in the nucleus. In this case:

• Protons (Z) = 11
• Neutrons (N) = 12
• Atomic Mass (A) = Z + N = 11 + 12 = 23

Explanation

The hydrolysis of fats is brought about by lipase enzymes.

Lipases are a class of enzymes that catalyze the hydrolysis of fats into fatty acids and glycerol.

Explanation

Acetophenone has the chemical formula C6H5COCH3

Explanation

BF3 (boron trifluoride) is not a nucleophile.

It is a Lewis acid, meaning it accepts electron pairs during reactions rather than donating them.

A nucleophile is a species (atom or group of atoms) that donates a pair of electrons to form a new covalent bond.

Nucleophiles are often negatively charged or have lone pairs of electrons that can be used for bonding.

• H2O (water)
• H2S (hydrogen sulfide)
• NH2

Explanation

Acetamide, which is a primary amide and has the chemical formula CH3CONH2, is typically prepared by heating ammonium acetate.

Here's the reaction:

CH3COO −NH4+ → CH3CONH2 + H2O

In this reaction, ammonium acetate (CH3COONH4) decomposes upon heating to form acetamide (CH3CONH2) and water (H2O).

This process is a type of thermal decomposition reaction.

Explanation

"Alkanoic acid" is another term for carboxylic acid.

Carboxylic acids are organic compounds characterized by the presence of a carboxyl group (-COOH) attached to an alkyl chain.

Examples of carboxylic acids include"

• acetic acid (ethanoic acid)
• formic acid (methanoic acid)
• butyric acid (butanoic acid)
  

Explanation

Substitution reactions are given by alkanes whereas unsaturated hydrocarbons like alkenes and alkynes undergo addition reactions.

Explanation

Nitrogen (N) occurs free in nature as diatomic nitrogen gas (N2).

It makes up about 78% of Earth's atmosphere and is a major component of air.

The other elements mentioned—antimony (Sb), arsenic (As), and phosphorus (P)—are typically found in combined forms rather than in their free elemental states in nature.

They commonly occur in various compounds and minerals.