Carbon dioxide gas has a solubility of 0.0972 g/100 g H2O at 40 degrees celsius. Expressed in parts per million, this concentration is closest to...
(1)0.972 ppm (2)9.72 ppm (3)97.2 ppm (4)972 ppm
(1)0.972 ppm (2)9.72 ppm (3)97.2 ppm (4)972 ppm