When an unknown amine reacts with an unknown acid chloride, an amide with a molecular mass of 163 g/mol (m = 163 m/z) is formed. in the infrared spectrum, important absorptions appear at 1661, 750 and 690 cm–1. the 13c nmr and dept spectra are provided below. draw the structure of the product as the resonance contributor lacking any formal charges.

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Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1

List four observations that indicate that a chemical reaction may be taking place