Table of ions *chemistry* Please Help me​

What is the number of moles in 15.0 g ash3?

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

0.09 moles of sodium sulfate in 12 ml of solution