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.
The pound (symbol Â£ , or AÂ£ when distinguished from other currencies called the pound) was the currency of Australia from 1910 until 14 February 1966, when it was replaced by the Australian dollar. It was subdivided into 20 shillings (symbol s), each of 12 pence (symbol d).he history of currency in Australia could be said to begin in 1800, when Governor Philip Gidley King issued a proclamation setting the value of a variety of foreign coins in New South Wales.