For a time the President received hundreds of them every day, most of them worthless.

For every rude word of Mr. Banks's the family had five in apology.

For every person on Taiwan, there are sixty in Mainland China.

For added strength, I also fastened a small block on each side of every frame and batten joint.

For those who put their trust in Him He still says every day again: `` Let there be light ''!!

For every criterion which defines what something is, at the same time proclaims -- implicitly if not openly -- what that something is not.

For new galaxies to be created, Professor Bondi declares, it would only be necessary for a single hydrogen atom to be created in an area the size of your living room once every few million years.

For some reason, this ellipsis in the conversation spread until it swallowed up every other topic.

For example, " biweekly " can mean " fortnightly " ( once every two weeks – 26 times a year ), or " twice a week " ( 104 times a year ).

** Tarski's theorem: For every infinite set A, there is a bijective map between the sets A and A × A.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

For example, if we abbreviate by BP the claim that every set of real numbers has the property of Baire, then BP is stronger than ¬ AC, which asserts the nonexistence of any choice function on perhaps only a single set of nonempty sets.

For Tarrou, plague is the destructive impulse within every person, the will and the capacity to do harm, and it is everyone's duty to be on guard against this tendency within themselves, lest they infect someone else with it.

For every group G there is a natural group homomorphism G → Aut ( G ) whose image is the group Inn ( G ) of inner automorphisms and whose kernel is the center of G. Thus, if G has trivial center it can be embedded into its own automorphism group.

For Hume, every effect only follows its cause arbitrarily — they are entirely distinct from one another.

Professor Henry Higgins sings, " Look at her, a prisoner of the gutters / Condemned by every syllable she utters / By right she should be taken out and hung / For the cold-blooded murder of the English tongue.

For every 100 females there were 91. 4 males.

For every 100 females age 18 and over, there were 87. 4 males.

For every 100 females there were 105. 6 males.

For every 100 females age 18 and over, there were 97. 5 males.

For example, the division example above is surjective ( or onto ) because every rational number may be expressed as a quotient of an integer and a natural number.

For example, the BBC website, which had previously been called BBC Online, took on the BBCi brand from 2001, displaying an i-bar across the top of every page, offering a category-based navigation: Categories, TV, Radio, Communicate, Where I Live, A-Z Index, and a search.

For every 100 females there are 95. 6 males.

For every 100 females age 18 and over, there were 94. 7 males.

For example, in the Schrödinger picture, there is a linear operator U with the property that if an electron is in state right now, then in one minute it will be in the state, the same U for every possible.

For a chemical process the first of these might involve the concentrations of the different chemical species, and the temperature or pressure of the stream.

For substances which have two ( or more ) stable crystalline forms, such as diamond and graphite for carbon, there is a kind of " chemical degeneracy ".

For example, all atoms with 6 protons in their nuclei are atoms of the chemical element carbon, and all atoms with 92 protons in their nuclei are atoms of the element uranium.

For purposes of international communication and trade, the official names of the chemical elements both ancient and more recently recognized are decided by the International Union of Pure and Applied Chemistry ( IUPAC ), which has decided on a sort of international English language, drawing on traditional English names even when an element's chemical symbol is based on a Latin or other traditional word, for example adopting " gold " rather than " aurum " as the name for the 79th element ( Au ).

For example, sodium has the chemical symbol ' Na ' after the Latin natrium.

For pure chemical elements, polymorphism is known as allotropy.

For instance, it defined chemical engineering to be a " science of itself, the basis of which is ... unit operations " in a 1922 report ; and with which principle, it had published a list of academic institutions which offered " satisfactory " chemical engineering courses.

For example, in the 1919 book Chemistry of Human Life physician George W. Carey states that, " Health depends on a proper amount of iron phosphate Fe < sub > 3 </ sub >( PO < sub > 4 </ sub >)< sub > 2 </ sub > in the blood, for the molecules of this salt have chemical affinity for oxygen and carry it to all parts of the organism.

For comparison, treating of cotton during a typical U. S. growing season requires the same amount of chemical as roughly 1, 700 homes.

For iron rust to occur the metal has to be in contact with oxygen and water, although chemical reactions for this process are relatively complex and not all of them are completely understood, it is believed the causes are the following:

For example, the chemical compound n-hexane has the structural formula, which shows that it has 6 carbon atoms arranged in a chain, and 14 hydrogen atoms.

For over 40 years, the FBI crime lab in Quantico believed lead in bullets had unique chemical signatures.

For example, snails may be dealt with through the use of a chemical pesticide, an organic pesticide, hand-picking, barriers, or simply growing snail-resistant plants.

For example ruby and sapphire have the same chemical composition ( both are corundum ) but exhibit different colors.

For example, diamonds, ruby, sapphires and emeralds have been manufactured in labs to possess identical chemical and physical characteristics to the naturally occurring variety.

For example, the stability and low energy of the electron cloud state in helium accounts for the element's chemical inertness, and also the lack of interaction of helium atoms with each other, producing the lowest melting and boiling points of all the elements.

For example, the metals cobalt and nickel had been assigned the atomic numbers 27 and 28, respectively, based on their known chemical and physical properties, even though they have nearly the same atomic masses.

For example, there was a so-called " element " that was even given the chemical name of " didymium ".

For example, semantic externalists maintain that the word " water " referred to the substance whose chemical composition is H < sub > 2 </ sub > O even before scientists had discovered that chemical composition.

For example, if one tried to demonstrate it using the hydrocarbons decane ( chemical formula C < sub > 10 </ sub > H < sub > 22 </ sub >) and undecane ( C < sub > 11 </ sub > H < sub > 24 </ sub >), one would find that 100 grams of carbon could react with 18. 46 grams of hydrogen to produce decane or with 18. 31 grams of hydrogen to produce undecane, for a ratio of hydrogen masses of 121: 120, which is hardly a ratio of " small " whole numbers.

For example, the olivine group is described by the variable formula ( Mg, Fe )< sub > 2 </ sub > SiO < sub > 4 </ sub >, which is a solid solution of two end-member species, magnesium-rich forsterite and iron-rich fayalite, which are described by a fixed chemical formula.