Record the equation for the reaction for Mg + NiNo3

Mg⁰(s) + Ni(NO₃)₂(aq) => Mg(NO₃)₂(aq) + NI⁰(s)

Explanation

Molecular Equation: Includes ground state elements and molecular species involved in reaction process.

Mg⁰(s) + Ni(NO₃)₂(aq) => Mg(NO₃)₂(aq) + NI⁰(s)

Ionic Equation: Includes all species associated with rxn process

Mg⁰(s) + Ni²⁺(aq) + 2NO₃⁻ (aq) => Mg²⁺(aq) + 2NO₃⁻(aq) + NI⁰(s)

Net Ionic Equation: Includes only those species that are involved in rxn

Mg⁰(s) + Ni²⁺(aq) => Mg²⁺(aq) + NI⁰(s)

*Nitrate ion (NO₃⁻) is a spectator ion; i.e., does not enter into oxidation-reduction process and is not included in the net ionic equation.

a galvanic cell( aka voltaic cell) and electrolytic cell

explanation:

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