Select true or false: the following net ionic equation correctly shows the result of this experiment: a piece of lead metal was added to an aqueous solution of copper(ii) nitrate, and within a few minutes it was observed that the lead turned black and crumbled. the characteristic blue solution of copper(ii) ions had faded. (note: lead forms a 2+ ion when it reacts.) pb(s) + cu2+(aq) → pb2+(aq) + cu(s)

Explanation:

A net ionic equation shows all the atoms whose oxidation state change, which is referred to as the species that participate of the reaction.

To write the net ionic equation you follow some basic steps:

        Use "aq" for aqueous solutions, "l" for liquids, "g" for gases, and "s"

        for solids.

        Use the solubility rules or data of solubility of the compounds to

        identify which compounds will precipitate (form solid product).

1) Molecular equation:

2) Ionization of the compounds.

3) Total ionic equation

4) Net ionic equation

The spectator ions are 2 NO₃⁻ (aq) (they did not change meaning that they did not participate in the reaction).

the answer is true.

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current