
The oxygen lab uses most of what we have learned this year.
Remember a massvolume stoichiometry problem can be solved with a 4 step factor label problem.
**22.4 L gas per mole is only true at STP and dry conditions The third set of boxes comes from the balanced reaction. (Use the coefficients or the big number in front of the chemical) This will be the V_{1} T_{1} and P_{1} for a combo gas law problem. V_{1} is your answer, T_{1} is 273K and P_{1} is 760 mm Hg (STP) V_{2} is what we are solving for. T_{2} will usually be room temperature. P_{2} is usually room pressure minus the water vapor pressure at T_{2}. Use the corrected P_{2} to make the water correction 