Respuesta :
Answer: 2C(s) + 3H2(g) = C2H6(g)
Explanation:
In balancing chemical equations, the reactant must be equal to the product. I.e law of conservation of matter must hold.
2 moles of carbon would react with 3 moles of hydrogen to give 1 mole of methane
2C(s) + 3H2(g) = C2H6(g)