In the laboratory a student burns a 0.421-g sample of azulene (C10H8) in a bomb calorimeter containing 1170. g of water. The temperature increases from 24.30 °C to 27.30 °C. The heat capacity of water is 4.184 J g-1°C-1. The molar heat of combustion is −5291 kJ per mole of azulene. C10H8(s) + 12 O2(g) 10 CO2(g) + 4 H2O(l) + Energy Calculate the heat capacity of the calorimeter.

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.