How many grams would 1.00 billion atoms of sulfur weigh

Explanation:

Hello,

In this case, by knowing that we have 1 billion ( 1,000,000,000) of atoms of sulfur, via the Avogadro's number we can firstly compute the moles:

Then, by using the atomic mass of sulfur (32 g/mol), we can finally compute the mass:

Best regards.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.