How do I find the heat of vaporization if the slope of the curve is -3000? And the theoretical ΔHvap is 35.2 kJ/mol. The equation I need to use is m= -ΔHvap/R

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

How many moles of al3+ ions are in 1.25 moles of al2o3

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