Question

when is expressing numbers using scientific notation useful? a. when the numbers are referring to moles b. when the numbers are only rough estimates c. when the numbers are very large or very small d. when the numbers come from scientific data

Explanation:

Scientific notation is a way to express very large or very small numbers in a more concise and manageable form. It is not specifically related to moles, rough - estimates, or just scientific data. The key is dealing with extreme magnitudes of numbers.

Answer:

C. When the numbers are very large or very small