Calculate the enthalpy for this reaction: 2c(s) + h2(g) > c2h2(g) δh° = kj given the following thermochemical equations: c2h2(g) + (5/2)o2(g) > 2co2(g) + h2o(ℓ) δh° = -1,123 kj c(s) + o2(g) > co2(g) δh° = -340 kj h2(g) + (1/2)o2(g) > h2o(ℓ) δh° = -211 kj