# Gas laws problem (need quick help )

gas laws problem (need quick help plz)

## Homework Statement

ill try to describe the situation as best i can
at first we have a flask (150 ml) with 0.1g of NaHCO3 we attach a syringe with 20ml of acetic acid (CH3COOH ) to it (and seal it off so nothing escapes)
we inject the acetic acid into the flask and pull the syringe back (so the overall volume doesnt change) the 2 compounds react and produce CO2
the initial(before adding the acetic acid) temp. = 295.6k
initial pressure = 1.020 atm
final temp. = 297.6 k
final pressure = 1.176
what is the initial amount of gas in the flask(in mol)?
and what is the amount of co2 added(in mols)?
what is the partial pressure of CO2

## Homework Equations

ideal gas law equations

## The Attempt at a Solution

i used pv=nrt to calculate the initial amount of gas (using the initial conditions) = 6.45*10-3 mol
for the second part i use PV/nT(initial)=PV/nT(final) to get the amount of mols after the reaction but i get a value less than the first one. this doesnt make sense since we are adding gas to it (note that this was a real experiment and the values might be off from an ideal situation)
can someone help me out with this and maybe hint at what to do on the last 2 parts ?

i really appreciate the help