Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon

A. Sodium chloride

Explanation: Sodium chloride ( is an ionic compound formed by transfer of electrons from sodium to chlorine.

Electronic configuration of sodium:

Sodium atom will loose one electron to gain noble gas configuration and form sodium cation with +1 charge.

Electronic configuration of chlorine:

Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.

These ions can be separated in polar solvent water and thus are soluble in water.

Whereas methane ( is a covalent compound formed by sharing of electrons and is soluble in non polar solvents.

Bromine is a covalent compound formed by sharing of electrons and is soluble in non polar solvents.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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