How much money does hydroelectricity cost per kilowatt hours? I pay .07 cents a kWh. If one kilowatt hour of electricity cost nine cents how much does it cost to run a 500 watt light bulb for twenty four hours? 500 watts x 24 hours = 12,000 watt hours or 12kW h. 12 kW h x 9 cents/kW h is $1.08.
Laudanum /ËlÉËdáµnÉm/ is a tincture of opium containing approximately 10% powdered opium by weight (the equivalent of 1% morphine).Reddish-brown and extremely bitter, laudanum contains almost all of the opium alkaloids, including morphine and codeine, and its high morphine concentration makes it a potent narcotic.everal historical varieties of laudanum exist, including Paracelsus ' laudanum, Sydenham's Laudanum (also known as tinctura opii crocata), benzoic laudanum (tinctura opii benzoica), and deodorized tincture of opium (the most common contemporary formulation), among others.
hafnium. hafnium (hÄfËnÄÉm) [ key ], metallic chemical element; symbol Hf; at. no. 72; at. wt. 178.49; m.p. about 2,227Â°C; b.p. 4,602Â°C; sp. gr. 13.31 at 20Â°C; valence +4. Hafnium is a lustrous, ductile, silvery metal with a hexagonal, close-packed crystalline structure. hafnium: meaning and definitions-hafnium: Definition and Pronunciation. 2  Periodic Table of the Elements: Hafnium-Periodic Table of the Elements: Hafnium Atomic Number: 72 Atomic Symbol: Hf Hafnium Atomic Weight: ... 3  HF: meaning and definitions-HF: Definition and Pronunciation. 4  Hf-Hf Hf, symbol for the element hafnium.