The hydration equilibrium constant at 25 Â°C is called K h, which in the case of carbonic acid is [H 2 CO 3 ]/[CO 2 ] â 1.7Ã10 â3 in pure water and â 1.2Ã10 â3 in seawater. Hence, the majority of the carbon dioxide is not converted into carbonic acid, remaining as CO 2 molecules.n aqueous solution, carbonic acid exists in equilibrium with carbon dioxide, and the concentration of H 2 CO 3 is much lower than the concentration of CO 2.
The Indigenous cultures of Australia are the oldest living cultural history in the world â they go back at least 50,000 years and some argue closer to 65,000 years. One of the reasons Aboriginal cultures have survived for so long is their ability to adapt and change over time.
DNA confirms Aboriginal culture one of Earth's oldest. The first Aboriginal genome sequence confirms Australia's native people left Africa 75,000 years ago. ABORIGINAL AUSTRALIANS ARE descendents of the first people to leave Africa up to 75,000 years ago, a genetic study has found, confirming they may have the oldest continuous culture on the planet. Professor Eske Willerslev of the University of Copenhagen, who led the study, says Aboriginal Australians were the first modern humans to traverse unknown territory in Asia and Australia. It was a truly amazing journey that must have demanded exceptional survival skills and bravery, he says.