Recognised as Musical note
C#2
- C#2
- 69.3 Hz
- MIDI 37
C#2 (enharmonically Db2) is MIDI note 37, sounding at 69.296 Hz in equal temperament with A4 = 440 Hz. Its wavelength in air is 4.9498 m, and it sits in octave 2.
Pitch
Scientific pitch notationC#2
Enharmonic equivalentDb2the same pitch in equal temperament, spelled differently
MIDI note number37
Pitch classC# (1)
Octave2
As a sound wave
Wavelength in air4.9498 mat 343 m/s, dry air at 20 °C
Period14.4309 ms
Frequency one octave down34.648 Hz
AudibleYeshuman hearing runs roughly 20 Hz to 20 kHz and narrows with age
Intervals from here
Octave belowC#1 · 34.65 Hz
Perfect fifth belowF#1 · 46.25 Hz
Semitone belowC2 · 65.41 Hz
Semitone aboveD2 · 73.42 Hz
Major third aboveF2 · 87.31 Hz
Perfect fifth aboveG#2 · 103.83 Hz
Octave aboveC#3 · 138.59 Hz
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Also reads as
NOTeCSHArP2 (chemical formula)
- Formula
- 304.583 g/mol
- 9 atoms
NOTeCSHArP2 has a molar mass of 304.583 g/mol, made up of 9 atoms across 8 elements: 1 × N, 1 × O, 1 × Te, 1 × C, 1 × S, 1 × H, 1 × Ar, 2 × P.
Molar mass
Molar mass304.583 g/mol
Total atoms per molecule9
Distinct elements8
Mass of one molecule5.0577197 × 10^-22 g
Molecules per gram1.9771756 × 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
N4.6%
O5.3%
Te41.9%
C3.9%
S10.5%
H0.3%
Ar13.1%
P20.3%
Nitrogen (N)14.007 g/mol, 4.599%
Oxygen (O)15.999 g/mol, 5.253%
Tellurium (Te)127.6 g/mol, 41.893%
Carbon (C)12.011 g/mol, 3.943%
Sulfur (S)32.06 g/mol, 10.526%
Hydrogen (H)1.008 g/mol, 0.331%
Argon (Ar)39.95 g/mol, 13.116%
Phosphorus (P × 2)61.948 g/mol, 20.339%
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page