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[23] 0.23 ppm of the earth's mass is water and 97.39% of the global water volume of 1.38 × 10 9 km 3 is found in the oceans. [84] Water is far more prevalent in the outer Solar System, beyond a point called the frost line, where the Sun's radiation is too weak to vaporize solid and liquid water (as well as other elements and chemical compounds ...
According to a report published by the Water Footprint organization in 2010, a single kilogram of beef requires 15 thousand litres (3.3 × 10 ^ 3 imp gal; 4.0 × 10 ^ 3 US gal) of water; however, the authors also make clear that this is a global average and circumstantial factors determine the amount of water used in beef production.
In this state, the distinction between liquid and gas disappears. A supercritical fluid has the physical properties of a gas, but its high density confers solvent properties in some cases, which leads to useful applications. For example, supercritical carbon dioxide is used to extract caffeine in the manufacture of decaffeinated coffee. [3]
The Roman water god, Neptune, was almost identical to Poseidon. Water deity; Water (classical element) – One of four primary substances in antiquity; Holy water – Water blessed by a religious figure; Adam's ale – Colloquial allusion to water; Water sports ) List of water sports. Swimming – Water-based sport
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences.
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
≤ 3 × 10 −12: from decay solid 94 Pu Plutonium: Pluto, dwarf planet, then considered a planet f-block groups 7 f-block [244] 19.85: 912.5: 3501 – 1.28: ≤ 3 × 10 −11: from decay solid 95 Am Americium: Americas, where the element was first synthesized, by analogy with its homolog europium: f-block groups 7 f-block [243] 12: 1449: 2880 ...