Charles Keeling began measuring atmospheric CO, in 1958 at Mauna Loa Observatory in Hawaii. This graph shows the atmospheric carbon dioxide concentration in parts per million (ppm) by volume from 1958 to 2016. Use this information to answer the four questions that follow Carbon dioxide concentration at Mauna Loa Observatory ET Full Record ending January 2, 2016 5 I 360 350€ 340€ N CO 320

H2so4(aq) + mg(s)—> mgso4(aq) +h2(g) which substance is the acid in the reaction?

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.

Charles's law describes the relationship of the volume and temperature of gas at a constant mass and pressure. according to this law, what would happen to the temperature of the gas if its volume decreased from 1.0 l to 0.50 l?