7. A chemistry teacher draws the Lewis structure of carbon dioxide, CO2, on the chalkboard. Which of these correctly describes the bonds between carbon and the two oxygens? A One is a single bond and one is a double bond. B В. Both are double bonds. c. One is a triple bond and one is a single bond. D. Both are single bonds. Free pointsss

Complete each row of the table below by filling in the missing prefix or missing exponent.

You wish to prepare a buffer consisting of acetic acid and sodium acetate with a total acetic acetate plus acetate concentration of 250 mm and a ph of 5. what concentrations of acetic acid and sodium acetate should you use

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.