Given the data:. N2 (g) + O2 (g) → 2 NO (g) ΔH° = +180.7 kJ 2 NO (g) + O2 (g) → 2 NO2 (g) ΔH° = -113.1 kJ 2 N2O (g) → 2 N2 (g) + O2 (g) ΔH° = - 163.2 kJ
using Hess’s Law the ∆H for the reaction below is kJ:.
N2O (g) + NO2 (g) → 3 NO (g)

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

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

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %