C(s) + O2(g) + CO2(g) + 393.5 kJ
-46 kj/mol
The standard enthalpy of formation for potassium hydroxide is -425,8 kJ/mol.
The heat of vaporization for silicon is 383 kJ/mol.
H2 + 1/2o2 --> h2o
The standard enthapy of formation for ethylene oxide is -52,6 J/mol.The standard enthapy of formation for acetaldehyde is is -166,6 J/mol.
S(s) + O2(g) SO2(g) + 296.8 kJ
graph D
Graph D `WXM
C(s) + 2S(s) + 89.4kJ --} CS2(l)
2C(s) + 2H2(g) + 52.5 kJ -> C2H4
H2(g) + S(s) H2S + 20.6 kJ
2C(s) + 2H2(g) + 52.5 kJ -> C2H4
C(s) + 2S(s) + 89.4 kJ --> CS2(l)
The standard enthalpy of formation for sodium chloride is -411,12 kJ/mol.
Approximately -82kJ/mol
1/2 N2(g) + O2(g) + 33.1 kJ NO2(g)
601.20 KJ/mol