Which of the equations below is an example of a thermochemical equation?
O 2 H2 (g) + 2 02 (g) --> H20 (g)
O 2 H2 (g) + 2O2 (g) --> H20 (g) + 483.6 kJ
O Mg + 2 H3O+ + Cl --> Mg2+ + 2C1 + H2+ H20
0 Mg (s) + 2 H3O+ (aq) --> Mg4+ (aq) + 2 H2(g) + H2O (1)

what are the óptions. pléase list them

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).

the answer is 303.15 or 303