Manufacturers can manipulate the electron density through impurities called dopants in the semiconductor. Impurities in higher densities allow the crystalline structure within the semiconductor to conduct electricity. LED manufacturers prefer gallium arsenide phosphide (GaAsP), gallium phosphide (GaP), and gal...
Impurities, the nuts in the cake, are introduced later in the manufacturing process; unlike imperfections, they are introduced deliberately to make the LED function correctly. This process is called doping. The impurities commonly added are zinc or nitrogen, but silicon, germanium, and tellurium ...
How to Get Rid of Mice In Your House Naturally Other creative chemistries for dispatching mice include metal phosphide-laced baits, he says. When zinc phosphide reacts with the acid in a rodent's stomach, highly toxic phosphine gas forms. Vitamin D is another killing agent. The vitamin makes...
Poison baits can also be used to control pocket gophers. To date, baits containing zinc phosphide and anticoagulants (Kaput) have been available in most states and have shown the best overall effectiveness. Martins Gopher Bait 50 is a very lethal bait for pocket gophers that can also be used...
However, the batteries that come with budget flashlights are often carbon-zinc. Lithium batteries. These batteries can hold their charge for up to 10 years. If you have a high-performance flashlight, then lithium is a better choice. High-performance lights use more current, and lithium ...
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How many formula units make up 27.2 g of magnesium chloride (MgCl2)? Express the number of formula units numerically. Write the formulas for each of the following ions and compounds: A) tetrahydroxozincate(I) B) pentaquachlorochromium(III) chlo...
Suppose that we wish to find the formula units of a salt in a form MxAy with a total mass of m and a molar mass M: First of all, the number of moles of the salt are found, such that n=mM. The number of moles of salt are converted into the number of moles of formu...