69. Which compound would be expected to show intense IR absorption at 3300 cm-1? (A) CH3CCCH3 (B) butane (C) 1-butene (D) CH3CH2CCH

79. Using a 60 MHz spectrometer, the protons in dichloromethane appear at 5.30 ppm. When the same sample is placed in a 100 MHz instrument, where does the signal appear? (A) 8.33 ppm (B) 3.18 ppm (C) 5.30 ppm (D) cannot be determined from information given