Select the properly written and balanced equation for the following chemical reaction: sodium metal and an aqueous solution of magnesium iodide react to produce an aqueous solution of sodium iodide and magnesium metal. na(s) + mgi (aq) -> nai (aq) + mg(s) na(s) + mgi2 (aq) -> nai2 (aq) + mg (s) 2na (s) + mgi2 (aq) -> 2nai (aq) + mg (s) 2na (s) + 4mgi (aq) -> 2nai2 (aq) + 4mg(s)

Explanation: The chemical reaction is written by writing down the chemical formulas of the reactants on the left hand side and the chemical formulas of products on the right hand side separated by a right arrow.

This is a single displacement reaction in which a more reactive element displaces the less reactive element from its salt solution. Thus sodium is more reactive than Mg and thus displaces it from .

The number of atoms of each element must be same on both sides of the reaction so as to follow the law of conservation of mass. Thus the equation is balanced.

chemical digestion occurs in the stomach were hcl and pepsin forms chyme, the mouth in which salivary amylase breaks down starch to form bolus, and the small intestine specifically the duodenum.

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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