Recognised as Musical note
A#3
- A#3
- 233.08 Hz
- MIDI 58
A#3 (enharmonically Bb3) is MIDI note 58, sounding at 233.082 Hz in equal temperament with A4 = 440 Hz. Its wavelength in air is 1.4716 m, and it sits in octave 3.
Pitch
Scientific pitch notationA#3
Enharmonic equivalentBb3the same pitch in equal temperament, spelled differently
MIDI note number58
Pitch classA# (10)
Octave3
As a sound wave
Wavelength in air1.4716 mat 343 m/s, dry air at 20 °C
Period4.2903 ms
Frequency one octave down116.541 Hz
AudibleYeshuman hearing runs roughly 20 Hz to 20 kHz and narrows with age
Intervals from here
Octave belowA#2 · 116.54 Hz
Perfect fifth belowD#3 · 155.56 Hz
Semitone belowA3 · 220 Hz
Semitone aboveB3 · 246.94 Hz
Major third aboveD4 · 293.66 Hz
Perfect fifth aboveF4 · 349.23 Hz
Octave aboveA#4 · 466.16 Hz
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Also reads as
NOTeAsHArP3 (chemical formula)
- Formula
- 366.408 g/mol
- 9 atoms
NOTeAsHArP3 has a molar mass of 366.408 g/mol, made up of 9 atoms across 7 elements: 1 × N, 1 × O, 1 × Te, 1 × As, 1 × H, 1 × Ar, 3 × P.
Molar mass
Molar mass366.408 g/mol
Total atoms per molecule9
Distinct elements7
Mass of one molecule6.084348 × 10^-22 g
Molecules per gram1.6435615 × 10^21
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
N3.8%
O4.4%
Te34.8%
As20.4%
H0.3%
Ar10.9%
P25.4%
Nitrogen (N)14.007 g/mol, 3.823%
Oxygen (O)15.999 g/mol, 4.366%
Tellurium (Te)127.6 g/mol, 34.825%
Arsenic (As)74.922 g/mol, 20.448%
Hydrogen (H)1.008 g/mol, 0.275%
Argon (Ar)39.95 g/mol, 10.903%
Phosphorus (P × 3)92.922 g/mol, 25.36%
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