Help would be appreciated Consider the decomposition of Nitrogen Monoxide into its elements:

2NO(g) --> N2(g) + O2(g)

The reaction is endothermic with ΔH equal to -182.6kJ

The reaction is exothermic with ΔH equal to +182.6kJ

The reaction is exothermic with ΔH equal to -182.6kJ

The reaction is endothermic with ΔH equal to +182.6kJ

Which statement describes the appearance of a temperature-vs.-time graph? a horizontal line shows that the temperature increases at a constant rate over time. a vertical line shows that the temperature decreases at a constant rate over time. horizontal lines where the temperature is constant during phase changes connect upward-sloping lines where the temperature increases. horizontal lines where the temperature increases are connected by upward-sloping lines where the temperature is constant for each phase.

In salt water solution,the salt is the blank

Can someone me with 6 to 10 plz this is for masteries test.