Give numerical answers to the following questions about the structure of a cholesterol molecule. a. How many six-membered rings are present?
b. How many amide linkages are present?
c. How many hydroxyl substituents are present?
d. How many total functional groups are present?

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

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If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?