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Cyanogen is the chemical compound with the formula (C N) 2. The simplest stable carbon nitride, it is a colorless and highly toxic gas with a pungent odor. The molecule is a pseudohalogen. Cyanogen molecules consist of two CN groups ‒ analogous to diatomic halogen molecules, such as Cl 2, but far less oxidizing.
Glucose (C 6 H 12 O 6), ribose (C 5 H 10 O 5), Acetic acid (C 2 H 4 O 2), and formaldehyde (CH 2 O) all have different molecular formulas but the same empirical formula: CH 2 O.This is the actual molecular formula for formaldehyde, but acetic acid has double the number of atoms, ribose has five times the number of atoms, and glucose has six times the number of atoms.
The Kemlo books are a series of children's science fiction novels written by Reginald Alec Martin, under the pseudonym of E. C. Eliott. [1] The first book, Kemlo and the Crazy Planet was published in 1954; the fifteenth and final book in the series, Kemlo and the Masters of Space, was published in 1963.
An example of the difference is the empirical formula for glucose, which is CH 2 O (ratio 1:2:1), while its molecular formula is C 6 H 12 O 6 (number of atoms 6:12:6). For water, both formulae are H 2 O. A molecular formula provides more information about a molecule than its empirical formula, but is more difficult to establish.
An early appearance of an Orion-style nuclear pulse propelled rocket in science fiction was in the science fiction novel Empire of the Atom written by A. E. van Vogt in 1956. In this novel there is a post-atomic-war interplanetary empire called the Empire of Lynn that uses Orion-type nuclear rockets for interplanetary spaceflight.
Since they were first hypothesised, neutron stars have formed part of the milieu of science fiction. [The Encyclopedia of Science Fiction] describes the terminology as "much used in SF". Indeed neutron stars and pulsars often seem to appear as part of the background setting of science fiction stories.
Fallen Angels (1991) is a science fiction novel by three American science fiction authors, Larry Niven, Jerry Pournelle, and Michael Flynn, and published by Jim Baen.Winner of 1992 Prometheus Award, the novel was written as a tribute to the science fiction fandom and includes many of its well-known figures, legends, and practices.
The Ganymede Club is a 1995 science fiction novel by American writer Charles Sheffield. A mystery and a thriller, [1] the story unravels in the same universe that Sheffield imagined in Cold as Ice. [2] Shortly after humanity begins colonisation of the Solar System, a trade war sets off vicious civil war that kills billions. [3]