Chemistry

Chemistry, 19.08.2019 15:30, paigeisawesome

Why is silicon used to make pv cells

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Physics, 07.08.2019 21:20, amiraapplewell

Solar cells are given antireflection coatings to maximize their efficiency. consider a silicon solar cell (n=3.50)coated with a layer of silicon dioxide (n=1.45). what is the minimum coating thickness (but not zero) that will minimize the reflection at the wavelength of 697 nm where solar cells are most efficient?

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Chemistry, 19.08.2019 23:30, adrianmelchor146

Which statement describes a chemical property of silicon? a) silicon has a blue-gray color. b) silicon is a brittle solid at 20.°c. c) silicon melts at 1414°c. d) silicon reacts with fluorine.

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Biology, 13.09.2019 01:30, la200564

Draw it some scientists think that life elsewhere in the universe might be based on the element silicon, rather than on carbon, as on earth. look at the electron distribution diagram for silicon in figure 2.7 and draw the lewis dot structure for silicon. what properties does silicon share with carbon that would make silicon-based life more likely than, say, neonbased life or aluminum-based life?

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Chemistry, 28.10.2019 16:31, lpierce35

Some isotopes of elements are unstable and decay into other, more stable isotopes over time. for example, it takes 153 years for half of a sample of silicon (si) atoms with 14 protons, 14 electrons, and 18 neutrons to decay. what is the name of this specific silicon isotope. a. silicon-14 b. silicon-32 c. silicon-46 d. silicon-153

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