Explanation

Molar mass of nitrogen (N): 14.01 g/mol 

Molar mass of hydrogen (H): 1.01 g/mol (3 H atoms in NH3) 

Molar mass of ammonia (NH3): 14.01 + (3 * 1.01) = 17.04 g/mol 

Percentage of nitrogen in NH3 = (14.01 / 17.04) * 100 = 82.23% 

This is very close to the provided option of 82.35%, which can be expressed as 14/17 * 100. 

Explanation

Germanium is a semiconductor.

It commonly used in electronics for its ability to conduct electricity under certain conditions.

It has properties between those of a conductor and an insulator, similar to silicon.

Explanation

Explanation

• An Addition Reaction is a type of chemical reaction where two or more substances combine to form a new, single compound.
• This type of reaction involves the formation of a new chemical bond, resulting in a single product with a unique identity.

Explanation

The statement "Total mass of the reactants and products will remain conserved during a chemical reaction" is called the Law of Conservation of Mass.

Explanation

• Isotopes of an element have the same atomic number (number of protons).
• It means they have the same chemical properties and are considered the same element.

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

• Mixtures are physical combinations of two or more substances that are not chemically combined.
• The components of a mixture retain their chemical properties and can be separated by physical means.

Explanation

Melting is the process by which a solid (in this case, ice) changes to a liquid (water) when it is heated and gains energy.