The following table shows the symptoms in four patients. each patient suffers from a different disease. patient disease cause symptom a tuberculosis bacteria chest pain, coughing b polio virus paralysis c stomach cancer environmental stomach pain, vomiting, nausea d food poisoning bacteria vomiting, loose stools which patient's digestive system is affected by an infectious agent? (5 points) a b c d

Benzonitrile (c6h5cn) is reduced to two different products depending on the reducing agent used. treatment with lithium aluminum hydride followed by water forms k, which has a molecular ion in its mass spectrum at 107 and the following ir absorptions: 3373, 3290, 3062, 2920, and 1600 cm-1. treatment with a milder reducing agent forms l, which has a molecular ion in its mass spectrum at 106 and the following ir absorptions: 3086, 2850, 2820, 2736, 1703, and 1600 cm-1. l shows fragments in its mass spectrum at m/z = 105 and 77. propose structures for k and l and choose an explanation for how this could be concluded.