How do I convert the measurements in the picture? ​

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

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

What is dhmo? hint: you find it everywhere something is wet..