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  2. Multiplication - Wikipedia

    en.wikipedia.org/wiki/Multiplication

    Four bags with three marbles per bag gives twelve marbles (4 × 3 = 12). Multiplication can also be thought of as scaling.Here, 2 is being multiplied by 3 using scaling, giving 6 as a result.

  3. Dicarboxylic acid - Wikipedia

    en.wikipedia.org/wiki/Dicarboxylic_acid

    It was shown that about 10% of their lipid fraction were symmetrical C30 to C34 diabolic acids. The C30 (13,14-dimethyloctacosanedioic acid) and C32 (15,16-dimethyltriacontanedioic acid) diabolic acids have been described in Thermotoga maritima. [8]

  4. Enthalpy - Wikipedia

    en.wikipedia.org/wiki/Enthalpy

    Enthalpy (/ ˈ ɛ n θ əl p i / ⓘ) is the sum of a thermodynamic system's internal energy and the product of its pressure and volume. [1] It is a state function in thermodynamics used in many measurements in chemical, biological, and physical systems at a constant external pressure, which is conveniently provided by the large ambient atmosphere.

  5. List of historical acts of tax resistance - Wikipedia

    en.wikipedia.org/wiki/List_of_historical_acts_of...

    In the 1st century AD, Jewish Zealots in Judaea resisted the poll tax instituted by the Roman Empire. [3]: 1–7 Jesus was accused of promoting tax resistance prior to his torture and execution ("We found this fellow perverting the nation, and forbidding to give tribute to Cæsar, saying that he himself is Christ a King" — Luke 23:2). [4]

  6. Gravity - Wikipedia

    en.wikipedia.org/wiki/Gravity

    In physics, gravity (from Latin gravitas ' weight ' [1]) is a fundamental interaction primarily observed as a mutual attraction between all things that have mass.Gravity is, by far, the weakest of the four fundamental interactions, approximately 10 38 times weaker than the strong interaction, 10 36 times weaker than the electromagnetic force, and 10 29 times weaker than the weak interaction.

  7. Sun - Wikipedia

    en.wikipedia.org/wiki/Sun

    The Sun is the star at the center of the Solar System.It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.

  8. Methane - Wikipedia

    en.wikipedia.org/wiki/Methane

    At about 891 kJ/mol, methane's heat of combustion is lower than that of any other hydrocarbon, but the ratio of the heat of combustion (891 kJ/mol) to the molecular mass (16.0 g/mol, of which 12.0 g/mol is carbon) shows that methane, being the simplest hydrocarbon, produces more heat per mass unit (55.7 kJ/g) than other complex hydrocarbons.

  9. Benzene - Wikipedia

    en.wikipedia.org/wiki/Benzene

    Kekulé's 1890 speech [42] in which this anecdote appeared has been translated into English. [43] If the anecdote is the memory of a real event, circumstances mentioned in the story suggest that it must have happened early in 1862. [44]