After ovulation, the corpus luteum remaining in the ovary produces progesterone, which causes the endometrium to mature, causing it to thicken. The endometrial glands increase in size and begin to secrete mucus and a substance rich in glycogen. Thus, the ideal environment for implantation is create...
This is the basic way of evalulating ΔS for constant-temperature processes such as phase changes, or the isothermal expansion of a gas. For processes in which the temperature is not constant such as heating or cooling of a substance, the equation must be integrated over the required temperatu...
Research shows that Ligustilide has strong antispasmodic, antiasthmatic, and sedative effects, can improve microcirculation, relax smooth muscles, inhibit bacteria, and improve the body's immune regulatory function. It is a typical representative of phthalide compounds. It is mostly found in Umbelliferae...
It can be sublimed in vacuo, and readily at room temperature. It has also been purified by removal of water during azeotropic distillation of a *benzene solution. It is then recrystallised twice from anhydrous diethyl ether under argon, and stored under argon [Blackstock et al. J Org Chem ...
In the aerobic atmosphere currently prevailing at the Earth’s surface, the most stable form of carbon is its fully oxidised state, CO2. The atmosphere contains 2.6 x 1012 tonnes of carbon as CO2 which is in equilibrium with even larger amounts (1.3 x 1014 tonnes) in solution in the river...
Bis-(sodium sulfopropyl)-disulfide is a white to light yellow solid powder, mainly used in acid copper plating brightener, and can obtain decorative and functional coatings (such as printed circuit boards). Bis-(sodium sulfopropyl)-disulfide can be used with typical copper-plated formulations such...
a realization in terms of sum formulas, obeying conservation of “atoms”. In particular, these realizations can be chosen such that any two species have distinct sum formulas, unless\mathbf {S}implies that they are “obligatory isomers”. In terms of structural formulas, every compound is a ...
At 20°C, a 3.54 M aqueous solution of ammonium chloride has a density of 1.0512 g/mL. The formula weight of NH4Cl is 53.50 g/mol.options:6.953.360.2974.1018.00I know mass % = mass of solute/mass of solution, but these mass values are ...
Chemistry is so deeply ingrained into so many areas of business, government, and environmental management that some background in the subject can be useful (and able to give you a career edge as a team member having special skills) in fields as varied as product development, marketing, managem...
Stannous Sulfate is a white to slightly yellow, heavy crystalline powder. When dissolved in a 5% Sulfuric Acid Solution, a clear solution is obtained. Gradual hydrolysis occurs over a period of time with the formation of insoluble tin compounds. ...