Balance the reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1." 2AgNO₃ + MgCl₂ 2AgCl + Mg(NO₃)₂

The balanced equation is: 2AgNO₃ + MgCl₂ > 2AgCl + Mg(NO₃)₂

Explanation:

The law of conservation of mass states that in a normal chemical reaction, matter is neither created nor destroyed.

According to the law of conservation of mass, therefore, when a chemical reaction occurs, the mass of the products should be equal to the mass of the reactants. This implies that the amount of the atoms in each element in the chemical reaction remains the same before and after the reaction. A balanced chemical equation therefore,  is one that shows that the number of the atoms involved in the reactants side is equal to the number of atoms in the products side.

Considering the given reaction:

2AgNO₃ + MgCl₂ > 2AgCl + Mg(NO₃)₂

The amount in moles of each atom in the reaction is as follows;

Ag = 2 moles of atom on each side

N = 2 moles of atoms on each side

O = 6 moles of atoms on each side

Mg = 1 mole of atoms on each side

Cl = 2 moles of atoms on each side

Therefore, the above chemical equation is balanced.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

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