Instruct: What is the 'k_{\mathrm{h,cc}} = \frac{c_{\mathrm{aq}}}{c_{\mathrm{gas}}}' of O 2?
Output: SELECT k_{\mathrm{H,cc}} = \frac{c_{\mathrm{aq}}}{c_{\mathrm{gas}}} FROM table WHERE equation: = O 2