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Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
Potassium hexacyanidoferrate(II) can be used as a fertilizer for plants. [citation needed] Prior to 1900, before the invention of the Castner process, potassium hexacyanidoferrate(II) was the most important source of alkali metal cyanides. [6] In this historical process, potassium cyanide was produced by decomposing potassium hexacyanidoferrate ...
Potassium-40 is the largest source of natural radioactivity in animals including humans. A 70 kg human body contains about 140 g of potassium, hence about 140g × 0.0117% ≈ 16.4 mg of 40 K; [ 4 ] whose decay produces about 3850 [ 5 ] to 4300 disintegrations per second ( becquerel ) continuously throughout the life of the person.
Potassium closely resembles the saltiness of sodium. In practice, potassium chloride (also known as potassium salt) is the most commonly used salt substitute. Its toxicity for a healthy person is approximately equal to that of table salt (the LD 50 is about 2.5 g/kg, or approximately 190 g for a person weighing 75 kg).
or 1.1 mmol/L [63] 0.61 [64] 1.2 [64] mmol/L 40–59 years: 70 [23] 150 [23] mg/dL 0.77 [64] 1.7 [64] mmol/L > 60 years: 80 [23] 150 [23] mg/dL 0.9 [64] 1.7 [64] mmol/L Total cholesterol: 3.0, [65] 3.6 [14] [65] 5.0, [5] [66] 6.5 [14] mmol/L < 3.9 mmol/L [63] 120, [15] 140 [14] 200, [15] 250 [14] mg/dL < 150 mg/dL [63] HDL cholesterol: Female ...
It is 35.5 J⋅K −1 ⋅mol −1 at 1500 °C, 36.9 at 2500 °C, and 37.5 at 3500 °C. [29] The last value corresponds almost exactly to the value predicted by the Equipartition Theorem, since in the high-temperature limit the theorem predicts that the vibrational degree of freedom contributes twice as much to the heat capacity as any one of ...
Blood-sugar levels naturally fluctuate throughout the day, the body normally maintaining levels between 70 and 110 mg/dL (3.9–6.1 mmol/L). [3] [2] Although 70 mg/dL (3.9 mmol/L) is the lower limit of normal glucose, symptoms of hypoglycemia usually do not occur until blood sugar has fallen to 55 mg/dL (3.0 mmol/L) or lower.
For example, a poly-cationic receptor containing copper (the host) is coordinated with molecules such as tetracarboxylates, tricarballate, aspartate, and acetate (the guests). This study illustrates that entropy rather than enthalpy determines the binding energy of the system leading to negative cooperativity.