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  2. Barrel of oil equivalent - Wikipedia

    en.wikipedia.org/wiki/Barrel_of_oil_equivalent

    Metric regions commonly use the tonne of oil equivalent (toe), or more often million toe (Mtoe). Since this is a measurement of mass, any conversion to barrels of oil equivalent depends on the density of the oil in question, as well as the energy content. Typically 1 tonne of oil has a volume of 1.08 to 1.19 cubic metres (6.8 to 7.5 bbl).

  3. API gravity - Wikipedia

    en.wikipedia.org/wiki/API_gravity

    In the oil industry, quantities of crude oil are often measured in metric tons. One can calculate the approximate number of barrels per metric ton for a given crude oil based on its API gravity: barrels of crude oil per metric ton = API gravity + 131.5 141.5 × 0.159 {\displaystyle {\text{barrels of crude oil per metric ton}}={\frac {{\text{API ...

  4. Template:Bbl to t - Wikipedia

    en.wikipedia.org/wiki/Template:Bbl_to_t

    1 is a required parameter, which specifies the number of oil barrels to be converted to tonnes (metric tons). Please do not format this parameter; i.e., use 1234 instead of 1,234. API is the API gravity factor. The default value is 33.4, corresponding to a density of 858.1 kg/m³ or 7.330 bbl/t at 60 °F. 2 can either be a word or a number ...

  5. Barrel (unit) - Wikipedia

    en.wikipedia.org/wiki/Barrel_(unit)

    One common term is barrels per day (BPD, BOPD, bbl/d, bpd, bd, or b/d), where 1 BPD is equivalent to 0.0292 gallons per minute. [13] One BPD also becomes 49.8 tonnes per year. [ 13 ] At an oil refinery, production is sometimes reported as barrels per calendar day (b/cd or bcd), which is total production in a year divided by the days in that year.

  6. Mass number - Wikipedia

    en.wikipedia.org/wiki/Mass_number

    For other isotopes, the isotopic mass is usually within 0.1 u of the mass number. For example, 35 Cl (17 protons and 18 neutrons) has a mass number of 35 and an isotopic mass of 34.96885. [7] The difference of the actual isotopic mass minus the mass number of an atom is known as the mass excess, [8] which for 35 Cl is –0.03115.

  7. Wheat and chessboard problem - Wikipedia

    en.wikipedia.org/wiki/Wheat_and_chessboard_problem

    The problem may be solved using simple addition. With 64 squares on a chessboard, if the number of grains doubles on successive squares, then the sum of grains on all 64 squares is: 1 + 2 + 4 + 8 + ... and so forth for the 64 squares. The total number of grains can be shown to be 2 64 −1 or 18,446,744,073,709,551,615 (eighteen quintillion ...

  8. Long ton - Wikipedia

    en.wikipedia.org/wiki/Long_ton

    A long ton, also called the weight ton (W/T), [1] imperial ton, or displacement ton, is equal to: 2,240 pounds (1,016.0 kilograms; 1.0160 metric tons) exactly 12% more than the 2,000 pounds of the North American short ton , being 20 long hundredweight (112 lb) rather than 20 short hundredweight (100 lb)

  9. Builder's Old Measurement - Wikipedia

    en.wikipedia.org/wiki/Builder's_Old_Measurement

    Builder's Old Measurement (BOM, bm, OM, and o.m.) is the method used in England from approximately 1650 to 1849 for calculating the cargo capacity of a ship. It is a volumetric measurement of cubic capacity. It estimated the tonnage of a ship based on length and maximum beam. It is expressed in "tons burden " (Early Modern English: burthen ...