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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    0.000 125: 2012: DOE Hydrogen [8] Prices of hydrogen produced by distributed steam methane reforming, as predicted by H2A Production Model from United States Department of Energy, [9] assuming price of natural gas of US$3/MMBtu (US$10/MWh; US$0.10/m 3). Does not include cost of storage and distribution. 1: 2 H (D) Deuterium: 0.0001667 [10] 13 ...

  3. Roblox - Wikipedia

    en.wikipedia.org/wiki/Roblox

    Roblox is free to play, with in-game purchases available through a virtual currency called Robux. As of August 2020, Roblox had over 164 million monthly active users, including more than half of all American children under 16.

  4. List of most expensive video games to develop - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    Retrieved June 30, 2024. ^ " 'Grand Theft Auto IV' rolling out". East Bay Times. April 28, 2008. Archived from the original on March 31, 2024. Retrieved March 31, 2024. ^ Travers, Alan (February 1, 2013). "GTA 5' Costs $265 Million To Develop And Market, Making It The Most Expensive Video Game Ever Produced: Report".

  5. AOL Mail

    mail.aol.com

    You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

  6. Exchange rate - Wikipedia

    en.wikipedia.org/wiki/Exchange_rate

    v. t. e. In finance, an exchange rate is the rate at which one currency will be exchanged for another currency. [ 1] Currencies are most commonly national currencies, but may be sub-national as in the case of Hong Kong or supra-national as in the case of the euro. [ 2]

  7. Casio graphic calculators - Wikipedia

    en.wikipedia.org/wiki/Casio_graphic_calculators

    Power supply. four AAA alkaline batteries. Weight. 213 grams. Graphic calculators made by Casio include the touchscreen ClassPad 300 as well as the models with traditional buttons which can be divided into two main generations listed below. Casio produced the world's first graphing calculator, the fx-7000G .

  8. Total cost - Wikipedia

    en.wikipedia.org/wiki/Total_cost

    The marginal cost can also be calculated by finding the derivative of total cost or variable cost. Either of these derivatives work because the total cost includes variable cost and fixed cost, but fixed cost is a constant with a derivative of 0. The total cost of producing a specific level of output is the cost of all the factors of production.

  9. Scientific calculator - Wikipedia

    en.wikipedia.org/wiki/Scientific_calculator

    A scientific calculator is an electronic calculator, either desktop or handheld, designed to perform calculations using basic ( addition, subtraction, multiplication, division) and complex ( trigonometric, hyperbolic, etc.) mathematical operations and functions. They have completely replaced slide rules as well as books of mathematical tables ...