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  2. Enthalpy of fusion - Wikipedia

    en.wikipedia.org/wiki/Enthalpy_of_fusion

    The enthalpy of fusion is the amount of energy required to convert one mole of solid into liquid. For example, when melting 1 kg of ice (at 0 °C under a wide range of pressures), 333.55 kJ of energy is absorbed with no temperature change. The heat of solidification (when a substance changes from liquid to solid) is equal and opposite.

  3. Conversion of units - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_units

    As a more complex example, the concentration of nitrogen oxides (NO x) in the flue gas from an industrial furnace can be converted to a mass flow rate expressed in grams per hour (g/h) of NO x by using the following information as shown below: NO x concentration = 10 parts per million by volume = 10 ppmv = 10 volumes/10 6 volumes NO x molar mass

  4. Heats of fusion of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Heats_of_fusion_of_the...

    kJ/mol 1 H hydrogen (H 2) ; use (H 2) 0.1 : CRC (H 2) 0.12 : LNG (H 2) 0.117 : WEL (per mol H atoms) 0.0585 2 He helium; use: 0.0138 LNG: 0.0138 WEL: 0.02 3 Li lithium; use: 3.00 CRC: 3.00 LNG: 3.00 WEL: 3.0

  5. Equivalent (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Equivalent_(chemistry)

    The solution has 1 mole or 1 equiv Na +, 1 mole or 2 equiv Ca 2+, and 3 mole or 3 equiv Cl −. An earlier definition, used especially for chemical elements , holds that an equivalent is the amount of a substance that will react with 1 g (0.035 oz) of hydrogen , 8 g (0.28 oz) of oxygen , or 35.5 g (1.25 oz) of chlorine —or that will displace ...

  6. Molar concentration - Wikipedia

    en.wikipedia.org/wiki/Molar_concentration

    To create the solution, 11.6 g NaCl is placed in a volumetric flask, dissolved in some water, then followed by the addition of more water until the total volume reaches 100 mL. The density of water is approximately 1000 g/L and its molar mass is 18.02 g/mol (or 1/18.02 = 0.055 mol/g). Therefore, the molar concentration of water is c(H 2 O ...

  7. Equivalent weight - Wikipedia

    en.wikipedia.org/wiki/Equivalent_weight

    potassium permanganate has a molar mass of 158.034(1) g mol −1, and reacts with five moles of electrons per mole of potassium permanganate, so its equivalent weight is 158.034(1) g mol −1 /5 eq mol −1 = 31.6068(3) g eq −1.

  8. 24 Discontinued '70s and '80s Foods That We'll Never Stop Craving

    www.aol.com/24-discontinued-70s-80s-foods...

    3. Keebler Fudge Magic Middles. Neither the chocolate fudge cream inside a shortbread cookie nor versions with peanut butter or chocolate chip crusts survived.

  9. Enthalpy of sublimation - Wikipedia

    en.wikipedia.org/wiki/Enthalpy_of_sublimation

    In thermodynamics, the enthalpy of sublimation, or heat of sublimation, is the heat required to sublimate (change from solid to gas) one mole of a substance at a given combination of temperature and pressure, usually standard temperature and pressure (STP). It is equal to the cohesive energy of the solid.