Someone help me am i right or wrong

What is the number of moles in 15.0 g ash3?

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m

Which is an example of a highly unstable isotope that is often used in fission reactions?