What are the four characteristics of minerals

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Can someone me with 3 and 4 plz. this is for masteries test.

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