An atom of magnesium has 12 protons and 12 electrons. if the atom loses 2 electrons, what will be the charge on the ion that forms? –10 +10 +2 –2

The charge will be +2.

Explanation:

The atomic number of Mg is 12, so it has 12 protons.

The neutral atom of Mg has 12 electrons.

When an atom loses electrons it acquire positive charge.

The charge developed is equal to the number of electrons removed.

So the charge developed will be +2.

The equation will be:

A negative charge is developed when atom accepts electrons.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.