Recognised as Musical note
D#8
- D#8
- 4,978.03 Hz
- MIDI 111
D#8 (enharmonically Eb8) is MIDI note 111, sounding at 4,978.032 Hz in equal temperament with A4 = 440 Hz. Its wavelength in air is 0.0689 m, and it sits in octave 8.
Pitch
Scientific pitch notationD#8
Enharmonic equivalentEb8the same pitch in equal temperament, spelled differently
MIDI note number111
Pitch classD# (3)
Octave8
As a sound wave
Wavelength in air0.0689 mat 343 m/s, dry air at 20 °C
Period0.2009 ms
Frequency one octave down2,489.016 Hz
AudibleYeshuman hearing runs roughly 20 Hz to 20 kHz and narrows with age
Intervals from here
Octave belowD#7 · 2,489.02 Hz
Perfect fifth belowG#7 · 3,322.44 Hz
Semitone belowD8 · 4,698.64 Hz
Semitone aboveE8 · 5,274.04 Hz
Major third aboveG8 · 6,271.93 Hz
Perfect fifth aboveA#8 · 7,458.62 Hz
Octave aboveD#9 · 9,956.06 Hz
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Also reads as
NOTeDsHArP8 (chemical formula)
- Formula
- 727.356 g/mol
- 14 atoms
NOTeDsHArP8 has a molar mass of 727.356 g/mol, made up of 14 atoms across 7 elements: 1 × N, 1 × O, 1 × Te, 1 × Ds, 1 × H, 1 × Ar, 8 × P.
Molar mass
Molar mass727.356 g/mol
Total atoms per molecule14
Distinct elements7
Mass of one molecule1.2078031 × 10^-21 g
Molecules per gram8.2794955 × 10^20
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
N1.9%
O2.2%
Te17.5%
Ds38.6%
H0.1%
Ar5.5%
P34.1%
Nitrogen (N)14.007 g/mol, 1.926%
Oxygen (O)15.999 g/mol, 2.2%
Tellurium (Te)127.6 g/mol, 17.543%
Darmstadtium (Ds)281 g/mol, 38.633%
Hydrogen (H)1.008 g/mol, 0.139%
Argon (Ar)39.95 g/mol, 5.492%
Phosphorus (P × 8)247.792 g/mol, 34.067%
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