Draw the structure of a compound of molecular formula c4h8o that has a signal in its 13c nmr spectrum at ≥ 160 ppm. then draw the structure of an isomer with no rings of molecular formula c4h8o that has all of its 13c nmr signals at < 160 ppm.

Why does his teacher ask him to balance the equation by including the correct coefficient

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange