How many liters of hydrogen gas would be produced by the complete
reaction of 2.93 g of Al at STP according to the followingreaction? Remember 1 mol of an ideal gas
has a volume of 22.4 L at STP
2Al(s)+6HCl(aq)→2AlCl₃(aq)+3H₂(g)

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.

Ithink it is +1hope this

Each calcium ion has a charge of +2, which can also be written as ca2+. if those ions move out of the neuron and no other ions are moving, the neuron would lose the positive charge associated with those ions and become more negatively charged.