Answer: Paul used 100 centigrams of salt for a chemistry experiment.
Explanation:
We know that 1 gram = 100 centigrams.
We are given that Paul used 1 gram of salt for a chemistry experiment.
But since 1 gram = 100 centigrams.
That means Paul used 100 centigrams of salt for a chemistry experiment.
Hence, the correct answer is Paul used 100 centigrams of salt for a chemistry experiment.