Analysis there can be no effect without a cause," modestly answered candide; "the whole is necessarily concatenated and arranged for the best. it was necessary for me to have been banished from the presence of miss cunegonde, to have afterwards run the gauntlet, and now it is necessary i should beg my bread until i learn to earn it; all this cannot be otherwise

the product of the pressure and volume is also constant

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

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.