Write the balanced chemical equation for the standard enthalpy of formation of P4O10(s). Be sure to include the phases

4 P(s, white) + 5 O₂(g) ⇒ P₄O₁₀(s)

Explanation:

The standard enthalpy of formation of P₄O₁₀(s) is the energy required to synthesize 1 mol of P₄O₁₀(s) from the simple substances in their most stable form. The corresponding balanced chemical equation is:

4 P(s, white) + 5 O₂(g) ⇒ P₄O₁₀(s)

P(s, white) is the most stable allotropic form of phosphorus. The standard enthalpy of formation of P₄O₁₀(s) is -2984 kJ/mol.

sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell