Cuál es la clasificación de las siguientes reacciones químicas según la cantidad de reactantes y productos y según la energía (1p c/u, total 6p): a) 2CO (g) + O 2(g) 2CO2(g) b) 2 HI (g) H 2(g) + I 2(g) c) Pb(NO) 2(ac) + 2KI (ac) PbI 2(s) + 2KNO 3(ac) d) C (s) + H 2 O (l) CO (g) + H 2(g) + 240 Kcal e) N 2(g) +3 H 2(g) 2NH 3(g) f) CO2 (g) + H 2 O (l) + Luz C6 H12 O6 (g) + O2 (g)

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Calculate the ph of a .10m nh4cl solution. the kb value for nh3 is 1.8×10^-5

Which method would be best to separate a mixture of sand and gravel