Cual de las siguientes ecuaciones corresponde a una combustión a. C5H12 + O2 → CO2 + H2O
b. N2 + H2 → NH3
c) Mg + O2 → MgO
d) MnO2 + Al → Al2O3 + Mn

a. C5H12 + O2 → CO2 + H2O

c) Mg + O2 → MgO

Explanation:

Una reacción de combustión es definida como una reacción en la que un elemento o compuesto reacciona con oxígeno para producir un óxido y liberar calor.

Cuando un hidrocarburo (De fórmula general CₓHₙ) entra en combustión, dióxido de carbono y agua son producidos.

Así, las reacciones que corresponden a combustión son:

a. C5H12 + O2 → CO2 + H2O

Se produce dióxido de carbono y agua

c) Mg + O2 → MgO

Se produce óxido de magnesio y se libera calor.

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates