Answer:

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.
Answer:
C
Explanation:
an index fossil is a fossil from a very short-lived, geographically widespread species known to exist during a specific interval of geological time.
No, it won't change the amount of reactants nor the products as a catalyst will only provide an alternative path where lower activation energy is needed for the process to take place.
hope this explains it
If it does, please give it a brainliest :)))
WHAT? Oh, a mixture you can see is a heterogeneous mixture. This means you can see the different parts and pieces that make up the mixture.