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  2. Iron(II) sulfate - Wikipedia

    en.wikipedia.org/wiki/Iron(II)_sulfate

    Iron(II) sulfate (British English: iron(II) sulphate) or ferrous sulfate denotes a range of salts with the formula Fe SO 4 ·xH 2 O. These compounds exist most commonly as the heptahydrate (x = 7) but several values for x are known. The hydrated form is used medically to treat or prevent iron deficiency, and also for industrial applications.

  3. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. ... The price listing for radioisotopes is ...

  4. Iron fertilization - Wikipedia

    en.wikipedia.org/wiki/Iron_fertilization

    Iron fertilization is the intentional introduction of iron-containing compounds (like iron sulfate) to iron-poor areas of the ocean surface to stimulate phytoplankton production. This is intended to enhance biological productivity and/or accelerate carbon dioxide (CO 2 ) sequestration from the atmosphere.

  5. Pyrite - Wikipedia

    en.wikipedia.org/wiki/Pyrite

    Pyrite detectors can be as sensitive as a modern 1N34A germanium diode detector. [23] [24] Pyrite has been proposed as an abundant, non-toxic, inexpensive material in low-cost photovoltaic solar panels. [25] Synthetic iron sulfide was used with copper sulfide to create the photovoltaic material. [26]

  6. Cost Of Adding Metal Detectors To Subway Stations In NYC - AOL

    www.aol.com/cost-adding-metal-detectors-subway...

    So, what would it cost to add metal detectors? Each metal detecting machine costs about $2,200, and the city would need four turnstiles per station. That adds up to $8,800.

  7. Acid sulfate soil - Wikipedia

    en.wikipedia.org/wiki/Acid_sulfate_soil

    The term ‘acid sulfate soils’ (ASS) was coined by the Working Party on Nomenclature and Methods for the first International Symposium on Acid Sulfate Soils (1972, Wageningen) to mean soils that contain, or have the potential to produce, sulfuric acid in quantities that cause significant and long-lasting changes in key soil properties. [22]

  8. Marcasite - Wikipedia

    en.wikipedia.org/wiki/Marcasite

    The hydrous iron sulfate forms a white powder consisting of the mineral melanterite, FeSO 4 ·7H 2 O. [13] This disintegration of marcasite in mineral collections is known as " pyrite decay ". When a specimen goes through pyrite decay, the marcasite reacts with moisture and oxygen in the air, the sulfur oxidizing and combining with water to ...

  9. Man Throws Away a Slice of Cake at Birthday Party - AOL

    www.aol.com/lifestyle/man-throws-away-slice-cake...

    The next morning, the man paid the price for trashing the coconut slice when he woke up to a series of angry texts from Amy’s partner, Steven, 30.

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