Enter your answer in the provided box. besides its use in making black-and-white film, silver nitrate (agno3) is used similarly in forensic science. the nacl left behind in the sweat of a fingerprint is treated with agno3 solution to form agcl. the precipitate is developed to show the black-and-white fingerprint pattern. given δhlattice of agno3 = 822 kj/mol and δhhydr = −799 kj/mol, calculate its δhsoln.

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.