What do we call the central ridge that divides the ocean floor into two parts? A) It is a seamount.
B) It is a mountain ridge.
C) It is the Great Divide.
D) It is the mid-ocean ridge.

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.