By Sam Elliott-Gibbs A mother who killed her one-year-old son by dousing his face with chemicals before smothering him with her bare hands is expected to face life in prison. Yemissi N. Keto, 26, has been found guilty by a jury at Dallas County Court and has been jailed after admitting killing the infant. In August, she was charged with first-degree murder and child endangerment after pouring bleach and other substances over the tot as she held his mouth and nose closed. She then suffocated the tragic child until he stopped breathing. She confessed to the harrowing crimes and Law and Crimes co…