Under certain conditions the rate of this reaction is zero order in ammonia with a rate constant of 0.0014 M·s 2 NH3(g) → N2(8)+3H2(g) Suppose a 350. mL flask is charged under these conditions with 150. mmol of ammonia. How much is left 80. s later? You may assume no other reaction is important. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.

The balanced chemical equation for the reaction between iodine vapour and fluorine gas is: 3I2(g) + 6F2(g) → 2IF5(g) + I 4F 2(g) A chemist measures the rate at which iodine vapour is consumed to be 4.5 × 10–4 mol/(L•s). At what rate is F2(g) consumed?

In a certain chemical reaction, substance A combines with substance B to form substance Y. At the start of the reaction, the quantity of A present is a grams, and the quantity of B present is b grams. Assume a < b and y ≤ a. At time t seconds after the start of the reaction, the quantity of Y present is y grams. For certain types of reactions, the rate of the reaction, in grams/sec, is given by Rate = k(a - y)(b − y), - where k is a positive constant. 1. Sketch a graph of the rate against y. For what values of y is the rate nonnegative? Give your answer as a union of intervals, e.g., (- infinity,-a] U (a, 2b) YE 2. Use your graph to find the value of y at which the rate of the reaction is fastest. У =

Consider the reaction: N₂(g) + 3H₂(g) → 2NH, (g) Suppose that a particular moment during the reaction, molecular hydrogen is reacting at a rate of -0.0540 formed? Be sure your answer has the correct number of significant digits. 0x100M S 10 X M At what rate is ammonia being