A substance decomposes with a rate constant of 9.05 × 10-ª s-1. How long does it take for 19.0% of the substance to decompose?

A study of the rate of the reaction represented as X + Y → 2 Z gave the following data: Time (s) 0.0 10.0 20.0 30.0 [A] (M) 0.8324 0.7115 0.6193 0.5463 Determine the average rate of disappearance of X between 20.0 s and 30.0 s, and the rate of appearance of Z between 20.0 and 30.0 s. 1) Average rate of disappearance of X between 20.0 s and 30.0 s = _______ M/s.   2) Average rate of appearance of Z between 20.0 s and 30.0 s = ______ M/s.

The rate constant at a given temperature for the reaction A →→ 2 B is 0.0145 s¯¹. What is the concentration of B (in molarity) after 1.8 minutes if the initial concentration of A is 2.6 M? Enter your answer without units.

Some measurements of the initial rate of a certain reaction are given in the table below. [N₂] [H₂] initial rate of reaction 1.81M 0.376M 105 M/s 1.81M 0.0561 M 1.19 × 105 M/S 0.236M 0.376M 1.36 × 104 M/s Use this information to write a rate law for this reaction, and calculate the value of the rate constant k. Round your value for the rate constant to 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k0.0² 0 8.00 × k = x10 0.0 X