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  2. Copper(II) oxide - Wikipedia

    en.wikipedia.org/wiki/Copper(II)_oxide

    Copper (II) oxide. [Cu+2]. [O-2] Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ?) Copper (II) oxide or cupric oxide is an inorganic compound with the formula CuO. A black solid, it is one of the two stable oxides of copper, the other being Cu 2 O or copper (I) oxide (cuprous ...

  3. Copper(II) sulfate - Wikipedia

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

    Copper(II) sulfate is an inorganic compound with the chemical formula Cu SO 4.It forms hydrates CuSO 4 ·nH 2 O, where n can range from 1 to 7. The pentahydrate (n = 5), a bright blue crystal, is the most commonly encountered hydrate of copper(II) sulfate, [10] while its anhydrous form is white. [11]

  4. Cooking weights and measures - Wikipedia

    en.wikipedia.org/wiki/Cooking_weights_and_measures

    Cooking weights and measures. Measuring spoons (metric) – 1 mL, 5 mL, 15 mL, 50 mL, 100 mL, 125 mL. Measuring spoons (customary units) In recipes, quantities of ingredients may be specified by mass (commonly called weight), by volume, or by count. For most of history, most cookbooks did not specify quantities precisely, instead talking of "a ...

  5. Copper(I) oxide - Wikipedia

    en.wikipedia.org/wiki/Copper(I)_oxide

    Copper (I) oxide or cuprous oxide is the inorganic compound with the formula Cu 2 O. It is one of the principal oxides of copper, the other being copper (II) oxide or cupric oxide (CuO).The compound can appear either yellow or red, depending on the size of the particles. [2] Cuprous oxide is found as the mineral cuprite.

  6. Copper oxide - Wikipedia

    en.wikipedia.org/wiki/Copper_oxide

    Copper(II) oxide (cupric oxide, CuO) Copper peroxide (CuO 2), a hypothetical compound; Paramelaconite (copper(I,II) oxide, Cu 4 O 3) Copper(III) oxide (Cu 2 O 3) does not exist although Cu(III) is a component of cuprate superconductors; Copper(IV) oxide (CuO 2) has been proposed to exist in the gas phase [2]

  7. Cup (unit) - Wikipedia

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

    The cup is a cooking measure of volume, commonly associated with cooking and serving sizes. In the US, it is traditionally equal to one-half US pint (236.6 ml). Because actual drinking cups may differ greatly from the size of this unit, standard measuring cups may be used, with a metric cup being 250 millilitres.

  8. Cuprate superconductor - Wikipedia

    en.wikipedia.org/wiki/Cuprate_superconductor

    Cuprate superconductor. Cuprate superconductors are a family of high-temperature superconducting materials made of layers of copper oxides (CuO 2) alternating with layers of other metal oxides, which act as charge reservoirs. At ambient pressure, cuprate superconductors are the highest temperature superconductors known.

  9. Yttrium barium copper oxide - Wikipedia

    en.wikipedia.org/wiki/Yttrium_barium_copper_oxide

    The boundary of each layer is defined by planes of square planar CuO 4 units sharing 4 vertices. The planes can sometimes be slightly puckered. [5] Perpendicular to these CuO 4 planes are CuO 2 ribbons sharing 2 vertices. The yttrium atoms are found between the CuO 4 planes, while the barium atoms are found between the CuO 2 ribbons and the CuO ...