Page Break What is the total amount of heat in Joules (1) that must be added to 250g of ice (solid H20) at -10°C to
change it into water at 40°C? (1. Cice= 2.011/6°C, 2. AHus= +6.01kJ/mol, 3. Swater = 4.181/5°C)
100'
(3)
Temp
(°C)
LIQUID
q#McAT
(2)
MELTING
(AHM)
ICE
qemCAT
So'c
Time

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.