Vacuum Dissolution Residue as a Dark-Energy Density: Computed Value Against the Observed Value

If vacuum energy is dissolved rather than cancelled, the question becomes quantitative: what density remains? This paper evaluates a family of residue prescriptions in which the Planck density is suppressed by powers of the ratio of a carrier mass to the Planck mass. Each integer power gives a definite residual density that can be placed beside the observed dark-energy density derived from the Planck 2018 expansion rate and dark-energy fraction. No integer power lands on the observed value for either the neutron or the electron carrier. The required suppression exponent is non-integer in both cases, which means a residue of this simple power form does not explain the observed density; it reformulates the familiar fine-tuning as a single exponent that any successful dissolution mechanism must produce. Headline values are: rho DE obs kg m3 = 5.836e-27, rho crit kg m3 = 8.523e-27, p required neutron = 6.432e+00, p required electron = 5.494e+00, log10 planck over observed = 1.229e+02. This study is simulated and computed from stated assumptions; it is not a measurement.