A ${2.25}\text{-L}$ kettle contains a mixture of liquid and vapour at $P=100\,\text{kPa}$. Initially, the mixture is ${51}\,\%$ liquid by volume.

1. What is the initial quality?
2. How long does it take for all of the liquid to boil, if vapour leaves at ${740}\,\text{mL}/\text{s}$ and the pressure stays constant within the kettle? $\text{min}$