Given the 1h and 13c data below, which isomers of c8h11n fit the spectral data? 13c nmr: δ 17.2, 20.4, 115.1, 122.4, 137.3, 127.6, 131.1, 142.1 ppm

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

Which of the following units is not an official si unit