In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[Q]: Question: The outer surface of the heart changes from positive to negative during what? Answer: depolarization
[A]: The outer surface of the heart changes from positive to negative during depolarization.


[Q]: Question: What is the amount of product that may be produced by a reaction under specified conditions called? Answer: theoretical yield
[A]: The amount of product that may be produced by a reaction under specified conditions is called theoretical yield.


[Q]: Question: Centrifuges use what to perform their task? Answer: inertia
[A]:
Centrifuges use inertia to perform their task.