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m(NaCl) = 2 mol/L × 0.1 L × 58 g/mol = 11.6 g. To create the solution, 11.6 g NaCl is placed in a volumetric flask, dissolved in some water, then followed by the addition of more water until the total volume reaches 100 mL. The density of water is approximately 1000 g/L and its molar mass is 18.02 g/mol (or 1/18.02 = 0.055 mol/g). Therefore ...
The first clear instance of the preparation of hydrochloric acid appears in the writings of Della Porta, (1589 and 1608), Libavius (1597), pseudo-Basil (1604), van Helmont (1646) and Glauber (1648). Less convincing earlier references are found in the Plichto of Rosetti (1540) and in Agricola (1558). As for the first practical method of ...
TE buffer is also known as T 10 E 1 buffer, which can be read as "T ten E one buffer". To make a 100 ml solution of T 10 E 1 buffer, 1 ml of 1 M Tris base (pH 10–11) and 0.2 ml EDTA (0.5 M) are mixed and made up with double distilled water up to 100ml. Add microliter amounts of high molarity HCl to lower the pH to 8.
Small amounts of hydrogen chloride for laboratory use can be generated in an HCl generator by dehydrating hydrochloric acid with either sulfuric acid or anhydrous calcium chloride. Alternatively, HCl can be generated by the reaction of sulfuric acid with sodium chloride: [17] NaCl + H 2 SO 4 → NaHSO 4 + HCl↑. This reaction occurs at room ...
54 g of Tris base (CAS# 77-86-1, free base) 27.5 g of boric acid (CAS# 10043-35-3) 20 ml of 0.5 M EDTA (CAS# 60-00-4) (pH 8.0) Adjust pH to 8.3 by HCl. [2] TBE can be diluted to 1X prior to use in electrophoresis, 0.5x is acceptable as well. Higher concentrations will result in poor results due to excessive heat generation.
Goat Cheese, Pecan, and Mixed Green Salad. This premade salad consists of mixed greens, pecans, dried cranberries, bell peppers, tomatoes, red onions, and goat cheese with a honey vinaigrette. The ...
If this convention is used, then the values are in the same range as monovalent ions, e.g. 59.5 S cm 2 mol −1 for 1 / 2 Ca 2+ and 80.0 S cm 2 mol −1 for 1 / 2 SO 2− 4. [4] From the ionic molar conductivities of cations and anions, effective ionic radii can be calculated using the concept of Stokes radius.
“As an example, a serving of alcohol-- 12 ounces of light beer, 5 ounces of wine, or 1.5 ounces of liquor-- is generally between 100 to 150 calories.” Ahead, read on to learn tips for making ...