Since their discovery in 1985, fullerenes have been the subject of much researcher, with functionalized c60 being explored for making better solar cells. kolesov et al. reported the standard enthalpy of combustion and formation of crystalline c60 based on calorimetric measurements (v. p. kolesov et al., j. chem. thermodynamics 28, 1121( in one of their runs, they found the standard specific internal energy of combustion to be -36.0334 kj/g at 298.15 k. compute dh0combustion and dh0f per mol of c60 at this same temperature

People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina.with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)