Which of the diethylbenzene isomers (ortho, meta, or para) corresponds to each set of 13c nmr spectral data? [a] 13c nmr signals: 16, 29, 125, 127.5, 128.4, and 144 ppm [b] 13c nmr signals: 16, 29, 128, and 141 ppm [c] 13c nmr signals: 15, 26, 126, 128, and 142 ppm

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =