Using the dilution expression (ciVi = cfVf or M1V1 = M2V2) calculate the volumes of H2SO4 and KOH needed, given that the actual concentrations of these reagents available in lab (9.00 M H2SO4 and 1.40 M KOH) are different from the concentrations called for in the original procedure (10.0 M H2SO4 and 2.00 M KOH). Finally, scale the resulting volumes down by the factor calculated in (1) above. Report your volumes to the nearest ±0.1 mL

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.