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For example, consider Halon 1211. This halon has number 1211 in its name, which tells it has 1 carbon atom, 2 fluorine atoms, 1 chlorine atom, and 1 bromine atom. A single carbon only has four bonds, all of which are taken by the halogen atoms, so there is no hydrogen. Thus its formula is CF 2 ClBr, hence its IUPAC name is ...
2,2-Dichloro-1,1,1-trifluoroethane can be produced by reacting tetrachloroethylene with hydrogen fluoride in the gas phase. This is an exothermic reaction and requires a catalyst: This is an exothermic reaction and requires a catalyst:
For example, R-22 has one carbon atom, one hydrogen atom (2−1 = 1), two fluorine atoms, and one chlorine atom (4−2−1 = 1), so it is chlorodifluoromethane, while R-134 has two carbon atoms (2−1 = 1), two hydrogen atoms (3−1 = 2), four fluorine atoms, and no chlorine atoms (6−2−4 = 0), so it is one of the tetrafluoroethanes. This ...
I’m inheriting my elderly parents’ $680,000 investment portfolio — it’s managed by a long-time adviser with a 1.75% fee. ... While the average advisory fee is around 1% per a 2019 survey ...
Sulfur (16 S) has 23 known isotopes with mass numbers ranging from 27 to 49, four of which are stable: 32 S (95.02%), 33 S (0.75%), 34 S (4.21%), and 36 S (0.02%). The preponderance of sulfur-32 is explained by its production from carbon-12 plus successive fusion capture of five helium-4 nuclei, in the so-called alpha process of exploding type II supernovas (see silicon burning).
9.7 m (32 ft) Propulsion: one 190 MW OK-650B/OK-650M pressurized water nuclear reactor (HEU <= 45%) [1] 1 OK-7 steam turbine 43,000 hp (32 MW) 2 OK-2 Turbogenerators producing 2 MW; 1 seven-bladed propeller; 2 OK-300 retractable electric propulsors for low-speed and quiet maneuvering at 5 knots (9.3 km/h; 5.8 mph) Speed: 10 knots (19 km/h; 12 ...
1.32%. 1.35%. Down 3 basis points ... Reserve announced it was lowering the federal funds target interest rate by 25 basis points to a range of 4.50% to 4.75% — two months after its jumbo half ...
The 32X contains two Hitachi SH-2 32-bit RISC processors with a clock speed of 23 MHz, [1] [3] which Sega claimed would allow the system to work 40 times faster than a stand-alone Genesis. [1] Its graphics processing unit is capable of producing 32,768 colors and rendering 50,000 polygons per second, which provides a noticeable improvement over ...