Ammonia reacts slowly in air to produce nitrogen monoxide and water vapor:

NH₃(g) + O₂(g) ⇌ NO(g) + H₂O(g) + Heat

b. Write the equilibrium equation.

Methanol, CH₃OH, is used as race car fuel.

c. How many kilojoules are released by burning 50.0 g of methanol?

Sketch an energy diagram for a system in which the forward reaction has E_act = +25 kcal/mol (+105 kJ/mol) and the reverse reaction has E_act = +35 kcal/mol (+146 kJ/mol).

a. Is the forward process endergonic or exergonic?

Obtain a package of your favorite snack food and examine the nutritional information on the label. Confirm the caloric value listed by using the conversions listed in the table in the Chemistry in Action feature 'Energy from Food' (p. 191). Alternatively, you can use the estimates for caloric value for a given food as provided in the table.

b. How long would you have to engage in each of the physical activities to burn the calories contained in your snack?