How does the structure of Ethane (C2H6) and Propane(C3H8) differ? Are they members of a Homologous series?

Nitric oxide (no) can be formed from nitrogen, hydrogen and oxygen in two steps. in the first step, nitrogen and hydrogen react to form ammonia: n2(g) + 2 h_2(g) rightarrow 2 nh_3 (g) delta h = -92. kj in the second step, ammonia and oxygen react to form nitric oxide and water: 4 nh_3(g) + 5 o_2(g) rightarrow 4no(g) + 6 h_2o(g) delta h = -905. kj calculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

The movement of tectonic plates and in two locations is described below: location a: tectonic played push together location b: tectonic plates push apart