Calculate the empirical formula of vanillin
Calculate the empirical formula of vanillin? Vanillin, the dominant flavoring in vanilla, which contains C, H, and O and 1.05g of this substance, is completely combusted, 0.50g of H2O and 2.43g of CO2 are formed.
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An organic compound was found to contain 10.34% hydrogen, 27.59% oxygen and 62.07% carbon. Calculate its empirical formula and suggest a few possible molecular formulas. Name each of them.
Let, consider a homemade television projection system which employs a large thing positive lens to cast the image of the TV screen to a wall.
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Explain how does the behavior of the light beam distinct from the behavior of a bullet fired in the similar direction from the top of the freight car?
Calculate the molarity of H2SO4 solution if a preparation of sodium carbonate (Na2CO3) is known to contain the 98.6% Na2CO3. When a 0.678 g sample needs 36.8 mL of H2SO4 for complete neutralization.
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A planet needs 270 (Earth) days to finish its circular orbit around its sun, which consists of a mass of 6.4 x 1030 kg. (i) Determine the planet's orbital radius?
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