What is the empirical formula for this compound
A sample of an unknown biochemical compound is found to have a percent composition of 57.14% carbon, 6.17% hydrogen, 9.52% nitrogen and the balance oxygen. What is the empirical formula for this compound ?
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A certain copper ore contains 2.98% of Cu2S by mass, andthe remainder of the ore contains no copper. In 1991, a singleopen-air smelt furnace heated 32000 tons of this ore.
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If a block of continental crust and a block of oceanic crust are both 10 km thick and are "floating" on the aesthenosphere, how much higher is the top of the continental crust as compared to the oceanic crust? Density (ρ) = Mass/Volume
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