Percentages in chemical analysis

[bucket]

After doing several chemical analysis questions I've seen that some questions ask for different percentages.
I've found myself getting stuck on many of these questions because I don't know/don't remember as easily what is exactly being asked.
The only one I can remember without fail, are percentages, I know they have the general formula of
can anyone explain what some of the other ones are asking for?
Some that I've seen are



I think there might be others...

[Mao]

Mass/Volume:
% m/v :  mass per volume: 1% m/v is 1g/100mL
% w/v :  weight per volume, exactly as % m/v
ppm:  parts per million:  it can be used as m/v, 1 ppm = 1 microgram per mL, or 1 milligram per L (1 in a million)
mass/volume concentrations are based on the assumption that the density of the solution is 1g/mL

Volume/Volume:
% v/v : volume per volume: 1% v/v is 1mL/100mL


Mass/Mass:
ppm: parts per million: it can be used as m/v where it is an aqueous solution, as the average density is 1g/mL, 1ppm = 1 microgram per gram, or 1 milligram per kilogram
% m/m: mass per mass:  1% m/m = 1 gram/100 grams
% w/w: weight per weight, same as mass per mass

Mole/litre:
M: mole per litre. 1M = 1 mole/litre


EDIT: added stuff and fixed a couple things

[bucket]

thanks mao.
*prints*

[Mao]

i've added a few more things, it's basically a copy of the notes i've uploaded (when enwiabe/global-mods approve it)
its all formatted, so