You have 25.00 mL of 3% by mass solution of hydrogen peroxide. Assume the density of this solution is 1.00 g/mL. If all of the hydrogen peroxide decomposes to water and oxygen according to the reaction below:
2H2O2 (aq) <--> 2H2O (l) + O2 (g)
What is the total volume of oxygen gas generated if the temperature is 24 degrees C and the pressure is 770 Torr. (R = 0.08206 L atm/K mol) At this point you may ignore the effect of water vapor.