All fragments possible?

[kenhung123]

Are all fragments possible for a molecule that is analysed in mass spec?

Like every individual atom can fall off in different combinations or only set fragments can form

[Amino Acid]

Hypothetically, yes.

[kenhung123]

Also the concentration unit m/v% confuses me. Is it g/100ml or g/100ml*100 (due to %)

[chansthename]

Also the concentration unit m/v% confuses me. Is it g/100ml or g/100ml*100 (due to %)

g/100mL works for me (I remember it this way)

Also in mass spec, what is m/e or m/z (as some companies write)

[stonecold]

Grams per 100mL, the first one.

It is just a percentage.

8% m/m for example just means 8 grams per 100 grams.

[kenhung123]

oh ok but mathematically to have a % you need to x100 do you?

[chansthename]

oh ok but mathematically to have a % you need to x100 do you?

what is a percent?

it is one part out of 100. take it from there

[scocliffe09]

oh ok but mathematically to have a % you need to x100 do you?

effectively by saying 1g in 100mL you are doing the x100 - without the x100, it would be g per mL, so with the x100 it's g per 100mL...