B.5 Altering Fuels: Octane Rating
{"Image DocumentName": "B.5 Altering Fuels: Octane Rating", "Image ImageDescription": "Isooctane (2,2,4-trimethylpentane) by definition is 100 octane, straight chain heptane is 0. Gas is rated this way. (> isooctane > octane rating, > heptane < octane rating) Prior to the mid-1970, lead, was added to gasoline to inexpensively increase the octane rating by more slowly burning straight chain gasoline molecules, but the lead was found to be harmful to the environment, so eliminated.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}