This depends entirely on what key you are in.
The fifth note in the musical scale is the Dominant.
In C Major it would be G
In G Major it would be D
In D Major it would be A
In A Major it would be E
In E Major it would be B
In B Major it would be F#
in F# Major it would be C#
and in C# it would be G#
however in flat keys they are as follows
C remains the same (no key signature)
in F major it would be C
in Bb major it would be F
in Eb major it would be Bb
in Ab Major it would be Eb
in Db Major it would br Ab
in Gb major it would be Db
and in Cb major it would be Gb
there are also numerous minor keys to consider (natural, melodic, harmonic, jazz harmonic etc) and also the modes ([not including the major and minor] Dorian, Phrygian, Lydian, Mixolydian and Locrian) which all have a different 5th degree.
In major keys your 5th is a dominant and is usually a 7th chord, (in roman numerals V7 depicting that there is a dominant 7 on the initial root position triad) also each chord of each scale has a 5th,
However in Chords it is the 3rd that denoted major or minor, however in the case of chord 7 (which is dinimished) it is a minor third and a diminished 5th that give it its characteristic tone.
The fifth also is used in most music near the end of a piece or phrase, as part of a perfect cadence, which is the fifth chord going to the tonic (1st chord) this is widely regarded as the strongest way to end a piece of music (in the majority of music from the renaissance up until present day. however there are times where this is not used. for example if the piece is in a minor key, it is not always strong to finish on a minor chord as it makes the piece feel unfinished and 'unsatisfied' (as my university lecturer likes to say) in this case a tierce de picadi is used which is ending a minor piece on a major chord, (this can be any chord in the key that is major or even one that is out of the key [usually the tonic chord played as a major]) this gives the piece its finality and also ensures to the listener that the piece is finished. Bach used this a lot in his minor chorales. however it is somtimes used in the middle of a piece at the end of a phrase. to lead into another key or as a point from which to continue in the progression.
For more info it would be better to talk to the music teacher at your school or college, or to go to any music/book store and purchase a Music Theory book. they would tell you all you needed to know about scales, chords, chord construction, and the use of the fifth in a number of contexts.
sol - is the fifth note - - - as in do, ra, mi, fa, sol, la, ti , do
re as in do, re, me, fa, so, la, ti, do........
The fifth note of a Major Scale is the Dominant
The tonic note of any diatonic scale is the first note (starting note) of the scale. In the case of G-flat major the tonic note is G-flat!
A diatonic scale is simply a regular major or minor scale.
the answer is mediant
Chords built on the first, fourth, and fifth degrees of the major scale are major.
resolution
mediant
7 note scale. Any mode of major scale with no chromatic alterations
The tonic note of any diatonic scale is the first note (starting note) of the scale. In the case of G-flat major the tonic note is G-flat!
Any major or minor scale with eight notes starting on Do (the tonic note).
The fifth note of C major scale is G. The fifth note of any scale is always called the dominant.
a scale that is diatonic and pentatonic
The leading tone is the seventh scale degree of the diatonic scale which in F Major is the note "E".
A diatonic scale is simply a regular major or minor scale.
the answer is mediant
Diatonic scales contain 7 different notes, usually topped by the tonic note doubled at the octave.
Chords built on the first, fourth, and fifth degrees of the major scale are major.
The subdominate refers to the fourth note of the scale ( assuming it is a diatonic scale). In this case the subdominate of the C sharp major scale would be F#.