A seed crystal can be dropped into a saturated solution of sodium acetate. The solution will suddenly crystallize and turn to solid. Alternately, the solution may be slowly poured out onto a seed ...

Perovskite solar cells are poised to be the next big photovoltaic technology, after silicon. But they usually don’t last more ...

Commercial heat packs (containing iron and water, or supersaturated sodium acetate) and cold packs (various ammonium salts) can be used to show exo- and endothermicity. Heat packs that contain iron ...

When it is exposed to air, the iron begins to rust. This rusting process produces heat. The second contains a solution of the chemical sodium acetate and a small metal disc. When the disc is bent, ...

2 | Transfer the homogenate to a fresh tube and sequentially add 0.1 ml of 2 M sodium acetate (pH 4.0), 1 ml of phenol and 0.2 ml of 49:1 (wt/vol) chloroform/isoamyl alcohol per milliliter of ...