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Chemistry
Is there a difference between SiO2(aq) and H4SiO4?
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http://en.wikipedia.org/wiki/Silicic_acid
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How many oxygen atoms are in 1.90g og quartz (SiO2)?
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It looks ok to me. Perhaps you just punched it in the calculator wrong. My calculator says 3.76E22
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Put the following in order in terms of increasing melting point: SiH4, SiO2, CH4, NH3, PH3.
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If that is an all gaseous reaction the expression you wrote is correct However, if Si and SiO2 are
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