The temperature dependence of the molar mass distribution of the poly-α-olefins can be described by a common exponential decay function regardless of the investigated monomer. At Tp 's ranging from 20 to 100 °C, moderate isotacticity prevailed, but outside this temperature range, the poly...
Ka(ammonium) = 5.6 x 10^-10 The K_b of ammonia, NH_3, is 1.8 times 10^{-5}. What is the pH of a 2.000 milli molar solution of ammonia ? What is the pH of a solution made to be 0.5 M in NH_3 and 0.3 M in NH_4Br? K_b ...
the mass of the resulting AgCl precipitate is 71.7mg. Wh Calculate the molar concentration of 0.1 M AgNO3. Gold(III) chloride, AuCl3, has Ksp= 3.2 * 10^-25. Calculate the molar solubility of gold(III) chloride in 0.010 M HCl solution. and Calc...
ophorids and foraminifers (CaCO3cell cover), whereas Si has the same function in diatoms, silico-flagellates, and radiolarians (cell wall of SiO2). Further, many essential elements such as K, Mg, Mn, Fe, Zn, Cu, Ni and Mo are cofactors in enzymes, or constituents in cytochromes (Fe)...
In this area, the Kasamori Formation, which is dominated by muddy sandstone, probably acts as the hydraulic basement for the groundwater in the overlying Shimosa Group sediments. Mainly in the upland regions, groundwater is used extensively for irrigation and drinking water. The main aquifers sup...
The GPC measurements were performed using a set-up based on a Waters-1515 HPLC pump, a Waters 2414 (Beijng, China) refractive index detector and a combination of Styragel HT-2, HT-3 and HT-4 columns, the effective molar mass ranges of which are 100–10,000, 500–30,000 and 5000–...
are used: acid component: carbonic and/or dicarbonic acid with n CH2 groups (n = 0-6); alcohol component: aliphatic alcohols with n CH2 groups (n = 1-6) and/or aliphatic diols with n CH2 groups (n = 2-6), and/or polyether polyols with a molar mass from 100 to 2000 g/mol....
Formacijska Geološkakarta Južnega Dela Tržaško-komenske planote. Krednein Paleogenske Karbonatne Kamnine/Geological Map of the Southern part of the Trieste-Komen Plateau(Slovenia), 1:50000; Inštitut za Geologijo, Geotehniko Ingeofiziko: Ljubljana, Yugoslavia, 1996; p. 143. 43. ...
What is the pH of an aqueous buffer solution prepared from 0.95 M NH_3 and 1.22 M NH_4Cl? Ka (NH_4^+) = 5.6 \times 10^{-10}. A 0.399 M solution of a base (BOH) has a pH of 10.74. What is the pK_b? Calculate the ...