K
moles
L
kPa

Dalton's law Formula

Ptot=p1+p2+p3+...+pm (or)
ptot={n1+n2+n3+...nm}RT/v

Where,
p1,p2,p3, ...,pm= Partial pressures of the individual gases in the mixture.
V = volume,
T = temperature,
n1,n2,n3, ...,nm= n is the total amount of gas of the m gases present in the mixture,
R = 8.314 J K-1 mol-1, ideal gas constant.