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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium. It is followed by caesium , iridium and palladium by mass and iridium, gold and platinum by volume . Carbon in the form of diamond can be more expensive than rhodium.

  3. 1,1,1,2-Tetrafluoroethane - Wikipedia

    en.wikipedia.org/wiki/1,1,1,2-Tetrafluoroethane

    1,1,1,2-Tetrafluoroethane (also known as norflurane (), R-134a, Klea 134a, Freon 134a, Forane 134a, Genetron 134a, Green Gas, Florasol 134a, Suva 134a, HFA-134a, or HFC-134a) is a hydrofluorocarbon (HFC) and haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane) but with insignificant ozone depletion potential and a lower 100-year global warming ...

  4. Refrigerant - Wikipedia

    en.wikipedia.org/wiki/Refrigerant

    From early 2020 HFCs (including R-404A, R-134a and R-410A) are being superseded: Residential air-conditioning systems and heat pumps are increasingly using R-32. This still has a GWP of more than 600. Progressive devices use refrigerants with almost no climate impact, namely R-290 (propane), R-600a (isobutane) or R-1234yf (less flammable, in cars).

  5. That dozen cost $1.70 more — a good 40% higher — than it did just four months ago. ... bean production, sold for a record high of $3.44 per pound last week. ... being 27% higher now than they ...

  6. Still need to buy a Christmas tree? Here's the good news. - AOL

    www.aol.com/news/still-buy-christmas-tree-heres...

    For consumers, Christmas trees this holiday season will average around $80 to upwards of $100, compared with $75 in 2023 and in line with the previous year's figures, according to the group.

  7. AOL Calendar - AOL Help

    help.aol.com/products/aol-calendar

    Calendar · Oct 28, 2023 Create, share, or subscribe to a calendar Learn how to stay in touch with the people in your life by creating, sharing, or subscribing to a calendar.

  8. Chemical plant cost indexes - Wikipedia

    en.wikipedia.org/wiki/Chemical_plant_cost_indexes

    Chemical plant cost indexes are dimensionless numbers employed to updating capital cost required to erect a chemical plant from a past date to a later time, following changes in the value of money due to inflation and deflation. Since, at any given time, the number of chemical plants is insufficient to use in a preliminary or predesign estimate ...

  9. Mark Your Calendars: 3 2025 Social Security Cost-of-Living ...

    www.aol.com/finance/mark-calendars-3-2025-social...

    For example, if the COLA comes in at 2.5% and you're currently receiving $2,000 per month, you'd add another 2.5%, or $50 per month, to your checks in 2025. 2. December 2024: Beneficiaries receive ...