¿Quiénes tienen cargas eléctricas?¿DE QUE TIPO ES ESA CARGA?

How would you reduce the volume of gas

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2

Is a pencil falling to the floor anon contact force, a force, or a contact force