Carbonic acid is a weak acid that is created when carbon dioxide (CO 2) is dissolved in water (H 2 O), resulting in the chemical formula H 2 CO 3. When the acid dissociates, or gives up a hydrogen ion, the resulting molecule is called a bicarbonate ion.Carbonic acid appears frequently in the natural world.It can be found in sodas, champagne, and blood. The acid even appears in rain. During the making of soda, carbon dioxide is dissolved in water.hen the acid dissociates, or gives up a hydrogen ion, the resulting molecule is called a bicarbonate ion. Carbonic acid appears frequently in the natural world. It can be found in sodas, champagne, and blood. The acid even appears in rain. During the making of soda, carbon dioxide is dissolved in water.
Australian money consists of banknotes and coins. Australian banknotes (called bills in countries such as the USA) are made of plastic in a manufacturing process pioneered in Australia. They come in denominations of $100, $50, $20, $10 and $5.
AUD-Australian Dollar. The Australian Dollar is currently the fifth-most-traded currency in world foreign exchange markets. It is also used in the Christmas Island, Cocos (Keeling) Islands, and Norfolk Island, as well as the independent Pacific Island states of Kiribati, Nauru and Tuvalu.1  AUD RSS Feed.he Australian Dollar is currently the fifth-most-traded currency in world foreign exchange markets. It is also used in the Christmas Island, Cocos (Keeling) Islands, and Norfolk Island, as well as the independent Pacific Island states of Kiribati, Nauru and Tuvalu. 1  AUD RSS Feed.