Question

Mg+N2=Mg3N2 Ag+S=Ag2S

Answer 1

3Mg + N2 = Mg3N2

2Ag + S = Ag2S

Answer 2

The two chemical equations you provided are balanced chemical reactions involving the combination of elements to form compounds. Here they are:

1. Magnesium (Mg) reacts with nitrogen gas (N2) to form magnesium nitride (Mg3N2): 3 Mg + N2 → Mg3N2

2. Silver (Ag) reacts with sulfur (S) to form silver sulfide (Ag2S): 2 Ag + S → Ag2S

In these equations, the numbers in front of each chemical formula are the stoichiometric coefficients, which balance the equation to ensure that the same number of atoms of each element are present on both sides of the reaction.

For example, in the first equation, we need three magnesium atoms and one nitrogen molecule (which consists of two nitrogen atoms) to react and form two molecules of magnesium nitride, which contain three magnesium atoms and two nitrogen atoms each. Similarly, in the second equation, two atoms of silver and one atom of sulfur combine to form one molecule of silver sulfide, which contains two silver atoms and one sulfur atom.

Note: The coefficients in balanced chemical equations represent the ratio of moles, not just the number of atoms.