A glass bulb contains `2.24 of H_(2)` and `1.12L` of `D_(2)` at `STP`. It is connected a fully evacuated bulb by a stop-cock with a small opening. The stop-cock is opened for sometime and then closed. The first bulb now contains `0.10 g` of `H_(2)`. The percentage of `H_(2)` in the mixture is